Assertion: penguin's tail | /r/HasProperty | excellent field marks
Facets:
value: for proper identification
type: PURPOSE
Source sentences:
text: The chinstrap penguin, gentoo penguin, and adelie penguin all belong to this group, and their tails are excellent field marks for proper identification.
text: The chinstrap penguin, gentoo penguin, and adelie penguin all belong to this group, and their tails are excellent field marks for proper identification.