About: http://webisa.webdatacommons.org/377277775

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	preferably having 3 to 20 carbons, and M is a transition metal, preferably Zr, Hf, or Ti.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com