About: http://webisa.webdatacommons.org/235670883

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	An object, such as an eraser, dropped from a height of four feet will require an interval of one-half second before it strikes the floor.
http://www.w3.org/ns/prov#wasQuotedFrom	astronomy.org