About: http://webisa.webdatacommons.org/54324262

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	NIntegrate being a numerical integrator will need the symbols that are not the variable of integration to be numerical, e.g. NIntegrate[ y x, {x, 0,1}] will not evaluate if y is not
http://www.w3.org/ns/prov#wasQuotedFrom	wolfram.com