Assertion: turtle's shell | /r/HasProperty | gray
Facets:
value: in color
type: OTHER
value: depending on their habitat
type: OTHER
value: normally
type: DEGREE
Source sentences:
text: Their shells are normally brown, dark olive, gray or black, depending on their habitat.
text: Shell of alligator snapping turtle can be grey, black, brown or greenish in color.
text: Their shells can be brown, gray, yellow-brown, or black.