About: http://webisa.webdatacommons.org/77106499

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	Iron is one of the most common and important elements on Earth, constitute about 5% to 7% of the Earth???s crust, and is present in almost all kinds of rocks.
http://www.w3.org/ns/prov#wasQuotedFrom	corrosionist.com