Assertion: horseshoe crab | /r/CapableOf | act as a source of food
Facets:
value: for crustaceans
type: TRANSITIVE-OBJECT
value: for shorebirds
type: TRANSITIVE-OBJECT
value: for act as predators
type: PURPOSE
value: for fish
type: PURPOSE
value: to mollusks
type: TRANSITIVE-OBJECT
value: to polychaetes
type: TRANSITIVE-OBJECT
Source sentences:
text: Horseshoe crabs play an important part in marine ecosystems stirring up sediment layers, act as a source of food for fish, crustaceans, and shorebirds, and act as predators to mollusks and polychaetes.