<http://schema.org/about>
"Chanie Kirschner has watched enough 'Man vs. Wild' and 'This Old House' to know that foam insulation is the way to go (but you really shouldn't play in it)."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/remodeling-design/questions/what-are-my-options-for-house-insulation>