Assertion: keyboard instrument's string | /r/MadeOf | animal gut
Facets:
value: from the small intestine of sheep
type: OTHER
value: historically
type: TEMPORAL
Source sentences:
text: Stringed instrument , any musical instrument that produces sound by the vibration of stretched strings , which may be made of vegetable fibre, metal, animal gut, silk, or artificial materials such as plastic or nylon.
text: Strings were historically made of animal gut, usually from the small intestine of sheep (sometimes in combination with metal) and are still made of gut or a synthetic substitute, with metal windings on the lower-pitched strings.