( But ( ( the family ) ( ( is ( ( a part ) ( of it ) ) ) . ) ) )
(ROOT (S (CC But) (NP (DT the) (NN family)) (VP (VBZ is) (NP (NP (DT a) (NN part)) (PP (IN of) (NP (PRP it))))) (. .)))
But the family is a part of it.
(ROOT (S (NP (NNP Haumea)) (VP (VBZ is) (NP (NP (NN part)) (PP (IN of) (NP (DT the) (DT a) (JJ collisional) (NN family))))) (. .)))