About: http://webisa.webdatacommons.org/185786231

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	Before they could invent something, they had to notice that there was a problem or situation that needed to be made easier. 25.
http://www.w3.org/ns/prov#wasQuotedFrom	lessonplanspage.com