Assertion: zither's string | /r/CapableOf | add new notes
Facets:
Source sentences:
text: Since each string played a single note, adding strings added new notes for instrument families such as bow harps, harps, and lyres.
text: From the musical bow, families of stringed instruments developed; since each string played a single note, adding strings added new notes, creating bow harps, harps and lyres.