About: http://webisa.webdatacommons.org/277199137

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	nteger representing the formal valence charge of M; n is the total number of ligands q, and d is an integer greater than or equal to 1.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com