Assertion: tetrahedron | /r/CapableOf | point into the wind
Facets:
Source sentences:
text: An alternative to a windsock, the tetrahedron points into the wind.
text: Again, as a wind blows, the tetrahedron will shift, pointing into the wind, showing pilots which way they should takeoff and land (which is done, of course, into the wind).
text: A wind sock is inflated by the wind and points with the wind, whereas a tetrahedron will point into the wind!