<http://schema.org/about>
"As we normally associate fair trade with products like coffee, chocolate, and handcrafted goods, this probably seems like a really strange question.  But, in the case of one species of tropical fish, a number of environmental organizations, and the pet"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/natural-sciences/aquarium-owners-are-your-fish-fair-trade-certified.html>