About: http://webisa.webdatacommons.org/374367807

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	If the legend does not appear for a certain plot, then it is most likely that a legend is not necessary and thus no legend is produced.
http://www.w3.org/ns/prov#wasQuotedFrom	statmodel.com