About: http://webisa.webdatacommons.org/136192651

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	We can also say that the addition of water (hydration) is taking place, and as iron is a transition element, it has variable oxidation states.
http://www.w3.org/ns/prov#wasQuotedFrom	collective-evolution.com