Assertion: catapult's arm | /r/HasProperty | brought by the untwisting of the skeins
Facets:
value: violently
type: MANNER
value: back to the frame
type: OTHER
Source sentences:
text: The trigger being then pressed or struck with a hammer, the bowstring was released from the block, the stiff arms were violently brought back to the frame by the untwisting of the skeins, and the arrow was propelled through the centre “window” with great velocity.