<http://schema.org/totalTime>
"PT30M"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.goodhousekeeping.com/food-recipes/a6915/mashed-sweet-potatoes-ghk1107/?link=mashed-sweet-potatoes&dom=yah_life&src=syn&con=blog_gh&mag=ghk>