Assertion: duck's nest | /r/HasProperty | grass
Facets:
value: under river-side vegetation
type: LOCATION
value: in caves
type: LOCATION
value: in log-jams
type: LOCATION
Source sentences:
text: Nests are shallow, twig, grass and down-lined scrapes in caves, under river-side vegetation or in log-jams, and are therefore very prone to spring floods.