<http://schema.org/valueRequired>
"true"^^<http://www.w3.org/2001/XMLSchema#boolean>
<http://www.hayneedle.com/product/controlbrandmidcenturydiningmeetingtable.cfm?CI_SKU=KI2056&ADTYPE=pla&CI_SRC=17588969&GCLID=CPP0-fqHmLUCFSmCQgodYEUAAA&KW=&SOURCE=pla>