Assertion: wind instrument | /r/HasAspect | the hollow of one cup
Facets:
value: always
type: TEMPORAL
Source sentences:
text: On an anemometer with four cups, it is easy to see that since the cups are arranged symmetrically on the end of the arms, the wind always has the hollow of one cup presented to it and is blowing on the back of the cup on the opposite end of the cross.