Assertion: high humidity | /r/HasProperty | necessary
Facets:
value: to prevent membranes drying
type: PURPOSE
value: to prevent hardening
type: PURPOSE
value: because of the membrane
type: CAUSE
Source sentences:
text: High humidity is necessary because of the membrane that the chicks must break through in order to hatch.
text: High humidity is necessary to prevent membranes drying and hardening before the hatch fully emerges.