About: http://webisa.webdatacommons.org/448370122

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	My students' text book chapter on trigonometry starts with a very short definition of the tan operator and then sums it up with On your calculator there is a button called tan...
http://www.w3.org/ns/prov#wasQuotedFrom	metaltabs.com