<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.sfbike.org/?family_day&org=451&lvl=1&ite=509&lea=147674&ctr=0&par=1&org=451&lvl=1&ite=509&lea=147674&ctr=0&par=1>