PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • I always associated grey with things of a living nature, or of a gentler tone (I typically describe animal coats as being grey when it applies (i.e. they are obviously not red, brown, purple, or other non-grey colours); a light desaturated sky would be grey.On the other hand, gray describes things such as cement, concrete (especially buildings in big cities), foreboding skies (though dark grey
http://www.w3.org/ns/prov#wasQuotedFrom
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