The weasel, which is brown in summer, is known as an ermine in winter once its fur turns white.
(The weasel; is; brown; T:in summer) (The weasel, which is brown in summer; is known; as an ermine in winter; T:once its fur turns white) (its fur; turns white; )
The weasel The weasel, which is brown in summer its fur
is is known turns white
brown T:in summer
as an ermine in winter T:once its fur turns white