About: http://webisa.webdatacommons.org/96216535

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	Carbonaceous asteroids contain lots of organic material and water; silicaceous asteroids are a mixture of iron and magnesium silicates; metallic asteroids are dominated by iron, but also contain other metals such as nickel and platinum.
http://www.w3.org/ns/prov#wasQuotedFrom	freerepublic.com