About: http://webisa.webdatacommons.org/291629049

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	Do we demand this of other works of art such as paintings, sculptures, symphonies etc?
http://www.w3.org/ns/prov#wasQuotedFrom	poetryarchive.org