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"http://www.bulbs.com/results.aspx?Ntt={search_term}"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bulbs.com/Troffer_Kits/2.000-2%22_--_under_3%22-Height_(in)/19.000-18%22_--_under_30%22-Width_(in)/results.aspx>