Assertion: crane's number | /r/CapableOf | rise to 600
Facets:
value: through an innovative program
type: CAUSE
value: through captive breeding
type: CAUSE
value: through wetland management
type: CAUSE
Source sentences:
text: The species declined to around 20 birds in the 1940s but, through captive breeding, wetland management, and an innovative program that teaches young cranes how to migrate, numbers have risen to about 600 today.