( Why ( ( ( ( can ( t ( dark matter ) ) ) simply ) ( be ( ( ( neutron stars ) and ) ( black holes ) ) ) ) ? ) )
(ROOT (SBARQ (WHADVP (WRB Why)) (SQ (MD can) (NP (JJ t) (JJ dark) (NN matter)) (ADVP (RB simply)) (VP (VB be) (NP (NP (NN neutron) (NNS stars)) (CC and) (NP (JJ black) (NNS holes))))) (. ?)))
Why can t dark matter simply be neutron stars and black holes?
(ROOT (S (NP (NP (DT The) (JJ tidal) (NNS forces)) (PP (IN near) (NP (JJ black) (NNS holes)))) (VP (VBP are) (ADJP (RB so) (JJ great) (SBAR (S (NP (PRP they)) (VP (MD can) (ADVP (RB actually)) (VP (VB tear) (NP (NN matter)) (PP (IN from) (NP (DT a) (NN companion) (NN star))))))))) (. .)))