Assertion: crab | /r/HasSubevent | the speciesintroduction
Facets:
value: to north
type: TRANSITIVE-OBJECT
value: to the black
type: TRANSITIVE-OBJECT
value: to baltic seas
type: TRANSITIVE-OBJECT
value: to mediterranean
type: TRANSITIVE-OBJECT
Source sentences:
text: Crabs traveling in ship ballast water have led to the species' introduction to the Black, North, Mediterranean, and Baltic Seas.