Good times with Semantics
<div itemscope itemtype="http://schema.org/SportsTeam">
<span itemprop="name">San Francisco 49ers</span>
<div itemprop="member" itemscope
itemtype="http://schema.org/OrganizationRole">
<div itemprop="member" itemscope
itemtype="http://schema.org/Person">
<span itemprop="name">Joe Montana</span>
</div>
<span itemprop="startDate">1979</span>
<span itemprop="endDate">1992</span>
<span itemprop="roleName">Quarterback</span>
</div>