About: http://webisa.webdatacommons.org/61987041

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	Chemically the soil is mostly silicon and oxygen combined with metallic elements such as iron and magnesium.
http://www.w3.org/ns/prov#wasQuotedFrom	scholastic.com