Assertion: puffin's plumage | /r/HasProperty | thick
Facets:
value: because of their life in icy waters
type: CAUSE
Source sentences:
text: Because of their life in icy waters, their plumage, which is black above and white below, is thick.
text: Puffins are small sized birds that have thick black and white plumage that helps to keep them warm in the cold conditions of the northernmost, Northern Hemisphere.