Assertion: bone carving | /r/ObjectUse | used in the middle ages whalebone
Facets:
value: often
type: TEMPORAL
value: from natural strandings
type: LOCATION
value: as a far cheaper alternative
type: PURPOSE
value: from the basque whaling industry
type: LOCATION
Source sentences:
text: Sperm whale teeth are another source, and bone carving has been used in many cultures without access to ivory, and as a far cheaper alternative; in the Middle Ages whalebone was often used, either from the Basque whaling industry or natural strandings.