Assertion: speaker's control | /r/Desires | rigid cone
Facets:
value: to avoid deformation
type: PURPOSE
value: extremely
type: DEGREE
value: to avoid consequent distortion
type: PURPOSE
Source sentences:
text: Furthermore, the column of air provides greater force on the driver itself than a driver opening onto a large volume of air (in simple terms it provides more resistance to the driver's attempt to move it), so to control the movement of air requires an extremely rigid cone, to avoid deformation and consequent distortion.