Assertion: grouse | /r/HasProperty | hidden in the grass
Facets:
Source sentences:
text: It is the habit of these dull-plumaged birds to lie hidden in the grass until the hunter’s dogs are upon them; then, with a sudden, loud whirring sound and with almost the speed of an arrow, they rise before the startled hunter, who must remain both cool and quick if he is to bag his game.