<http://schema.org/headline>
"Merck's allergy pill clears an FDA hurdle, but efficacy questions linger"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.fiercebiotech.com/story/mercks-allergy-pill-clears-fda-hurdle-efficacy-questions-linger/2013-12-12>