About: http://webisa.webdatacommons.org/428485279

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	Note that the gradient is a vector obtained by flattening the matrix corresponding to the variable positions.
http://www.w3.org/ns/prov#wasQuotedFrom	wolfram.com