Assertion: woodlouse's body | /r/CapableOf | provide good source of calcium
Facets:
value: for some spiders
type: TRANSITIVE-OBJECT
value: for frogs
type: TRANSITIVE-OBJECT
value: for birds
type: TRANSITIVE-OBJECT
Source sentences:
text: The bodies of pill-bugs provide a good source of calcium for some spiders, birds and frogs.