Assertion: catapult | /r/HasProperty | torsion powered weapon
Facets:
Source sentences:
text: The onager was a torsion powered weapon used in Europe from the fourth until the sixth century AD
text: The term traction trebuchet was created mainly to distinguish this type of weapon from the onager, a torsion powered catapult which is often conflated in contemporary sources with the mangonel, which was used as a generic term for any medieval stone throwing artillery.