( ( The family ) ( ( is ( part ( of this ) ) ) . ) )
(ROOT (S (NP (DT The) (NN family)) (VP (VBZ is) (NP (NP (NN part)) (PP (IN of) (NP (DT this))))) (. .)))
The family is part of this.
(ROOT (S (NP (NNP Haumea)) (VP (VBZ is) (NP (NP (NN part)) (PP (IN of) (NP (DT the) (DT a) (JJ collisional) (NN family))))) (. .)))