Assertion: piano | /r/HasProperty | invented in italy
Facets:
value: by bartolomeo cristofori
type: OTHER
value: around the year
type: TEMPORAL
Source sentences:
text: The piano is an acoustic, stringed musical instrument invented in Italy by Bartolomeo Cristofori around the year 1700 (the exact year is uncertain), in which the strings are struck by wooden hammers that are coated with a softer material.
text: The piano is an acoustic, stringed musical instrument invented in Italy by Bartolomeo Cristofori around the year 1700 (the exact year is uncertain), in which the strings are struck by wooden hammers that are coated with a softer material (modern hammers are covered with dense wool felt; some early pianos used leather).