<http://schema.org/ingredients>
"2 large sweet potatoes"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.countryliving.com/food-drinks/recipes/a1367/oven-baked-sweet-potato-fries-3483/?link=emb&dom=yah_life&src=syn&con=blog_countryliving&mag=clg>