<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.biobiochile.cl/noticias/2015/12/12/aun-no-se-vacunan-26-mil-personas-contra-el-sarampion-en-el-bio-bio.shtml>