About: http://webisa.webdatacommons.org/328291221

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 a positively charge atom and oxygen is a negatively charge atom, so they bond together and form chemical bond.http://www.visionlearning.com/library/module_viewer.php?mid=55
http://www.w3.org/ns/prov#wasQuotedFrom	slideshare.net