Assertion: piano's hammer | /r/HasProperty | lifted
Facets:
value: in order to hit the strings
type: PURPOSE
value: after striking the string
type: TEMPORAL
Source sentences:
text: This means that after striking the string, the hammer must be lifted or raised off the strings.
text: In this image (left), you can see that when the keys are pressed on the piano, the hammer is lifted in order to hit the strings.