Assertion: hippo | /r/HasProperty | critical
Facets:
value: because of the role
type: CAUSE
value: to the health of wetland ecosystems
type: TRANSITIVE-OBJECT
value: through defecation
type: MANNER
value: in fertilizing the water
type: TEMPORAL
Source sentences:
text: Hippos are also critical to the health of wetland ecosystems because of the role they play, through defecation, in fertilizing the water.