Assertion: keyboard instrument's string | /r/HasProperty | either hammered piano
Facets:
Source sentences:
text: They may produce sound by wind being fanned (organ) or pumped (accordion), vibrating strings either hammered (piano) or plucked (harpsichord), by electronic means (synthesizer), or in some other way.
text: They may produce sound by wind being fanned (organ) or pumped (accordion), vibrating strings either hammered (piano) or plucked (harpsichord), by electronic means (synthesizer), or in some other way.