<http://webisa.webdatacommons.org/prov/299094366> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/117595202> . <http://webisa.webdatacommons.org/117595202> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/117595202> <http://www.w3.org/ns/prov#wasQuotedFrom> <google.com> . <http://webisa.webdatacommons.org/117595202> <http://www.w3.org/ns/prov#value> "These heteropoly acids would likely have the Keggin structure, H8-n [XM12 O40 ], where X=P or Si, M=Mo or W and n is an integer which is 4 or 5." . <http://webisa.webdatacommons.org/prov/300021314> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/117595202> .