Assertion: harpsichord | /r/HasProperty | constructed by amateur
Facets:
value: since the late 1950s
type: TEMPORAL
value: from kits
type: OTHER
value: often
type: TEMPORAL
Source sentences:
text: Since the late 1950s, harpsichords have often been constructed by amateurs from kits, a system pioneered by the American builder Wolfgang Zuckermann.