( ( Because ( ( a ( black hole ) ) ( has ( such ( a ( powerful ( gravitational force ) ) ) ) ) ) ) ( , ( ( ( a ( galactic ( black hole ) ) ) ( in ( a ( binary system ) ) ) ) ( ( ( can literally ) ( ( tear apart ) ( its ( companion star ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Because) (S (NP (DT a) (JJ black) (NN hole)) (VP (VBZ has) (NP (PDT such) (DT a) (JJ powerful) (JJ gravitational) (NN force))))) (, ,) (NP (NP (DT a) (JJ galactic) (JJ black) (NN hole)) (PP (IN in) (NP (DT a) (JJ binary) (NN system)))) (VP (MD can) (ADVP (RB literally)) (VP (VB tear) (PRT (RP apart)) (NP (PRP$ its) (NN companion) (NN star)))) (. .)))
Because a black hole has such a powerful gravitational force, a galactic black hole in a binary system can literally tear apart its companion star.
(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))))))))) (. .)))