Assertion: cuttlefish's cuttlebone | /r/ObjectUse | used as calcium supplements
Facets:
value: for polishing silver
type: PURPOSE
value: for pet birds
type: TRANSITIVE-OBJECT
Source sentences:
text: Cuttlebones are used as calcium supplements for pet birds and for polishing silver (when powdered).
text: Cuttlebones are used as calcium supplements for pet birds and for polishing silver (when powdered).