<recipe type="allAges" name="sourdoughIngredients">
 <measurement>1 1/4 cups</measurement> (<amount>160 grams</amount>)
 <ingredient>white bread flour</ingredient>, plus more for dusting
 <measurement>1/4 cup</measurement> (<amount>38 grams</amount>)
 <ingredient>stone-ground whole-wheat flour</ingredient>
 <measurement>1/4 cup</measurement> (<amount>32 grams</amount>)
 <ingredient>stone-ground whole rye flour</ingredient>
 <measurement>1/2 teaspoon</measurement>
 <ingredient>instant yeast or bread machine yeast</ingredient>
 <measurement>1 teaspoon</measurement>
 <ingredient>table salt</ingredient>
 <measurement>1/4 cup</measurement> (<amount>55 grams</amount>) 
 <ingredient>dry fermented cider</ingredient>
 <measurement>1/2 cup</measurement> (<amount>120 grams</amount>)
 <ingredient>lukewarm water</ingredient> (<temperature>80 degrees</temperature>), 
 plus an optional 1 tablespoon recipe></recipe>
 <!--jgb: You may substitute a Pilserner beer for the dry fermented cider. -->

<recipe type="bread" name="country loaf (pain de campagne)">
  <measurement type="cup">1 1/4 cups (<measurement type="gram">160 grams</measurement>)</measurement>
  <!-- sd: is this a good/okay way to do measurement types? it seems weird but i don't really know -->
  <ingredient type="dry">white bread flour</ingredient>, plus more for dusting 
  <measurement type="cup">1/4 cup (<measurement type="gram">38 grams</measurement>)</measurement>
  <ingredient type="dry">stone-ground whole-wheat flour</ingredient>
  <measurement type="cup">1/4 cup (<measurement type="gram">32 grams</measurement>)</measurement>
  <ingredient type="dry">stone-ground whole rye flour</ingredient>
  <measurement type="tsp">1/2 teaspoon</measurement>
  <ingredient type="dry">instant yeast or bread machine yeast</ingredient>
  <measurement type="tsp">1 teaspoon</measurement>
  <ingredient type="dry">table salt</ingredient>
  <measurement type="cup">1/4 cup (<measurement type="gram">55 grams</measurement>)</measurement>
  <ingredient type="wet">dry fermented cider</ingredient> (may substitute Pilsener beer; see
    headnote) 
  <measurement type="cup">1/2 cup (<measurement type="gram">120 grams</measurement>)</measurement>
  <ingredient type="wet">lukewarm water</ingredient> (<temp>80 degrees</temp>), 
  plus an <measurement type="tsp">optional 1 tablespoon </measurement> 
 DIRECTIONS 
  <step n="1"><equipment type="utensil">Whisk</equipment> together the flours, yeast and salt in a 
  <equipment type="bakeware">mixing bowl</equipment></step>. 
  <step n="2">Combine the cider and water in a 
    <equipment type="bakeware">liquid measuring cup</equipment></step>.
   <step n="3">Add the liquid to the flour mixture; use a <equipment type="utensil">spatula</equipment> 
  or <equipment type="utensil">bench scraper</equipment> or your hand 
     moistened with water to blend them for about a minute</step>. 
  The dough should be shaggy yet cohesive. 
  <step n="4">Cover the bowl with a <equipment type="cloth">towel</equipment>; 
  let the dough rest for <time>20 minutes</time></step>. 
  <!-- MORE CODE  for the recipe steps -->
</recipe>

datatypes xsd = "http://www.w3.org/2001/XMLSchema-datatypes"
start = root

#bb_1/22/20: root is the root element
root = element root{intro, step+}

#bb_1/22/20: step is one of our 'highest' content objects on the hierarchy
step = element step{num, (exp|act|obj|desc|text)+}
#amp: This would be better as mixed content! 
#amp: So, it would look like this: step = element step{num, mixed{exp | act | obj | desc)+}}

#bb_1/22/20: intro is a misc element
intro = element intro{text}

#bb_1/22/20: other important places in the hierarchy
exp = element exp{(type|act|obj|desc|text)*} #exp = explanation
desc = element desc{(type|act|obj|text)*}    #desc = description

#amp: This is the same as before: these two would be better written with mixed content! 
So: exp = element exp{mixed{(type | act | obj | desc)*}}
#desc = element desc{mixed{(type | act | obj)*}}

act = element act{type, text}                #act = action
obj = element obj{type, text}                #obj = object

#bb_1/22/20: attributes
num = attribute num{xsd:int}
type = attribute type{text}     #types: 
                                  #comp = computer
                                  #conc = concept
                                  #rel = relate
                                  #adj = adjective
                                  #spec = specific
                                  #unspec = unspecific

#amp: My first comment is about comments! I'm glad to see you using comments 
not only to leave notes to the instructors, but also to give information about decisions 
that you're making while coding. 
This is so helpful when it comes to projects that you're going to share publicly, 
because it allows others to see these choices and better understand your code. 
So, great work with that! 

#amp: Another thing that I like with your schema is the organization! 
You have clearly designated sections for your elements and attributes that make your code really clear. 

#amp: For the future, I would try working more with the other repetition indicators, 
as well as with datatypes! In this specific assignment, you could code for the date of the 
assignment, and use xsd:date or xsd:YearMonth (or both!) to give even more metadata in 
your xml. Overall, this is a well-organized, simple schema that you'll be able to develop 
into a more complex schema if you were to continue with it (and with future projects!)

<?xml version="1.0" encoding="UTF-8"?>
<?xml-model href="01-22_SCHEMA_rngEx02.rnc" type="application/relax-ng-compact-syntax"?>
<root>
    <intro> Make sure you do the following: </intro>
    <step num="1"> 1) <act type="spec">Save</act> your <obj type="comp">Relax NG file</obj>
        <desc type="rel">with the <obj type="comp">.rnc extension</obj> at the 
          <obj type="conc">end</obj></desc> and <act type="unspec">work with it</act> in the 
      <desc type="adj">same</desc> <obj type="comp">file directory</obj>
        <desc type="rel">with your <obj type="comp">.xml file</obj>.</desc>
    </step>
    <step num="2"> 2) <act type="spec">Associate</act> your <obj type="comp">.rnc schema</obj>
        <desc type="rel">with your <obj type="comp">.xml file.</obj></desc>
        <exp>(You are <desc type="rel">finished</desc> with this <obj type="conc">exercise</obj> if
            your <obj type="comp">XML</obj> is <desc type="rel"><act type="spec">associated</act>
                with your schema</desc> and <desc type="adj">both</desc>
            <obj type="comp">files</obj> have <act type="spec">come out</act>
            <desc type="adj">"green"</desc> in <obj type="comp">oXygen</obj>.)</exp>
    </step>
    <step num="3"> 3) <act type="spec">Upload</act>
        <desc type="adj">BOTH</desc>
        <obj type="comp">files</obj> here. We <act type="unspec">need to see</act> your <desc
            type="rel"><obj type="comp">.xml file</obj> and your <obj type="comp">.rnc
            file</obj>.</desc>
    </step>
</root>
<!-- bb_1/22/20: I wanted to keep it simple for once, so I literally
 used the assignment as a text. Sue me.--> 

(//p[descendant::placeName => distinct-values() => count() gt 2])[last()]

(//p[count(distinct-values(descendant::placeName)) gt 2])[last()]