<http://schema.org/keywords>
"POLL"^^<http://www.w3.org/2001/XMLSchema#string>
<http://uk.reuters.com/article/2010/03/31/britain-politics-poll-idUKLNE62U04520100331?loomia_ow=t0:s0:a54:g12:r4:c0.379537:b33366830:z3>