Assertion: bellow | /r/HasProperty | needed
Facets:
value: so clearly
type: MANNER
value: to construct the bellows
type: PURPOSE
Source sentences:
text: “Bellows made with wood, leather and pipes are needed to make a forge.
text: It is necessary to construct the bellows such that all of the travel occurs on the compression side of the point of equilibrium.
text: The pressing need at that time was for MORE AIR FORCE, so clearly BELLOWS were needed to increase the AIR FORCE; thousands of BELLOWS to RAISE THE WIND.