<http://schema.org/target>
"http://www.bulbs.com/results.aspx?Ntt={search_term}"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bulbs.com/Fixtures/3%22_--_under_4%22-Height_(in)/10.500-6%22_--_under_12%22-Diameter_(in)/results.aspx>