<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.codingforums.com/php/274466-parse-error-syntax-error-unexpected-t_is_equal-expecting.html?s=16b531967bacf96798dff88a084c7b36>