Assertion: penguin's nest | /r/MadeOf | small stones
Facets:
value: in muddy or gravelly areas
type: LOCATION
Source sentences:
text: Most nests are made of small stones and pebbles in muddy or gravelly areas; however, some nests can be made among tussock grasses or even on bare rock.
text: Most nests are made of small stones and pebbles in muddy or gravelly areas; however, some nests can be made among tussock grasses or even on bare rock.