Assertion: cicada's sound | /r/CreatedBy | flexing and relaxing muscles
Facets:
value: rapidly
type: MANNER
Source sentences:
text: The loud buzzing and clicking sounds you might have heard before are made by rapidly flexing and relaxing muscles to shake structures called tymbals.
text: The loud buzzing and clicking sounds you might have heard before are made by rapidly flexing and relaxing muscles to shake structures called tymbals.