Assertion: cormorant's guano | /r/HasProperty | important
Facets:
value: due to its role
type: CAUSE
value: ecologically
type: DEGREE
Source sentences:
text: Guano is ecologically important due to its role in dispersing nutrients.
text: Most pelecaniform birds are of rather little significance to humans, but the guano (excrement) of cormorants, boobies, and pelicans is an important fertilizer.