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http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Researchers from the University of Wisconsin, Madison are wondering whether sleep is an essential part of life or something that has evolved over time to avoid stress and kill time. read more 2 comments Scent of Skin Cancer Discovered
http://www.w3.org/ns/prov#wasQuotedFrom	inventorspot.com