<http://schema.org/about>
"While many cities have programs that turn leftover Christmas Trees into mulch and wood chips, (in NYC they call it Mulchfest, and you can go home with a bag of mulch). But in recent years, other uses such as structural aquatic"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/natural-sciences/what-to-do-with-discarded-christmas-trees-a-habitat-for-fish-and-for-people.html>