<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.msxlabs.org/forum/soru-cevap/339786-kuvvetleri-yonu-ve-dogrultusu-ile-tarif-etmek-nicin-onemlidir.html>