Assertion: grouse's breeding ground | /r/CapableOf | become degraded through overgrazing
Facets:
value: by sheep
type: CAUSE
Source sentences:
text: In 2002, Ireland was found by the European Court of Justice to be in breach of its obligations under the earlier Directive to protect the red grouse, in that it had allowed a crucial breeding ground to become degraded through overgrazing by sheep.