<http://schema.org/about>
"Girls who walked or biked to school in a recent Spanish study performed better at school in verbal and math skills then their cohorts who rode the bus or rode a car, according to this story"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/cars/biking-makes-teens-smarter-but-just-the-girls.html>