About: http://webisa.webdatacommons.org/129728546

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	With a schematic diagram dynamically updating along the way, enter information such as impact angle, density, and diameter of the object -- or select suggestions from pull-down lists, such as "school bus - 40 ft and the moon - 3476 km.
http://www.w3.org/ns/prov#wasQuotedFrom	mathforum.org