About: http://webisa.webdatacommons.org/336305302

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	Windmills have also been used to power machines that grind grain.eds of years to power machinery used to grind grain such as wheat and corn.
http://www.w3.org/ns/prov#wasQuotedFrom	unl.edu