The injury which all surgeons thought was incurable took away the victims life.
What is the relative clause of this sentence?
which all surgeons thought was incruable.
Is was curable also part of this relative clause?
My books say relative pronoun will serve as subject or object in the clause,
if which all surgeons thought was incurable is the relative clause,
Since which is behind the verb and is in front of be verb was,
Should which act as the subject or the object?