About: http://webisa.webdatacommons.org/254082427

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	You can not assume that tip is a number so you better write to ignore tip if NaN
http://www.w3.org/ns/prov#wasQuotedFrom	github.com