About: http://webisa.webdatacommons.org/132494249

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	The propulsion medium for this sort of catapult was usually a material such as wood, rope or sinew under tension, with the tension having been accumulated through the work of the operating personnel (bow and arrow principle).
http://www.w3.org/ns/prov#wasQuotedFrom	monochrom.at