<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.genengnews.com/Login.aspx?ReturnURL=%2Fgen-articles%2Fstem-cell-initiatives-at-sanford-consortium-for-regenerative-medicine%2F4060%2F>