About: http://webisa.webdatacommons.org/374581208

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	Estimated Time of Completion: Three to four class periods, including introduction to lesson, research, and compiling information.
http://www.w3.org/ns/prov#wasQuotedFrom	pbs.org