Assertion: cello's string | /r/CapableOf | make sound
Facets:
Source sentences:
text: The four strings of the cello make sound by being stretched and plucked, just as a rubber band will "twang" when you stretch it between your fingers and pull it.
text: Bow hair is great to use for playing string instruments, except for one thing: by itself, it cannot create the friction needed to cause a string to vibrate and produce sound!