realized that i just did n't care 
(ROOT (S (VP (VBD realized) (SBAR (IN that) (S (NP (PRP i)) (ADVP (RB just)) (VP (VBD did) (RB n't) (VP (VB care))))))))
(ROOT (S (VP (VBD ) (SBAR (IN ) (S (NP (PRP )) (ADVP (RB )) (VP (VBD ) (RB ) (VP (VB ))))))))