Assertion: foil | /r/HasAspect | limited air inlets
Facets:
value: with valves
type: OTHER
value: (hopefully)
type: OTHER
value: in order to make
type: PURPOSE
Source sentences:
text: In order to make them suitable for use on water some foils have limited air inlets in the centre of the leading edge, with valves to keep the air in and (hopefully) the water out.