Assertion: grandfather clock | /r/HasAspect | pendulum
Facets:
Source sentences:
text: In a grandfather clock, which had a pendulum which swung once per second, the escape wheel often had 30 teeth, which made the escape wheel rotate once per minute so the second hand could be attached to its shaft.
text: A grandfather clock has a clock face, pendulum and weights enclosed in a thin, tall freestanding wooden case.