About: http://webisa.webdatacommons.org/289180344

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	difficulty in accessing archival tissue samples, especially tissue samples with known clinical results; or ??
http://www.w3.org/ns/prov#wasQuotedFrom	sec.gov