Assertion: clarinet's instrument | /r/MadeOf | wood
Facets:
value: in the 18th century
type: TEMPORAL
Source sentences:
text: However, most historians believe that determining a specific time of musical instrument invention is impossible, as many early musical instruments were made from animal skins, bone, wood and other non-durable materials.
text: In the 18th century, the instruments were made of wood or ivory and had three or four sections and two keys –
text: However, most historians believe that determining a specific time of musical instrument invention is impossible, as many early musical instruments were made from animal skins, bone, wood and other non-durable materials.