About: http://webisa.webdatacommons.org/20659609

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	417: Mayapan, a brilliant natural philosopher, discovers cement, the first of hundreds of discoveries and inventions he will make over decades of studying rocks, plants, and other materials.
http://www.w3.org/ns/prov#wasQuotedFrom	wikia.com