About: http://webisa.webdatacommons.org/210788420

Property	Value
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	Moreover, because conditions other than cancer can cause tissue discoloration, an accurate visual characterization is extremely difficult, and histopathological analysis of a physical tissue sample is often required.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk