it 's impossible to care 
(ROOT (S (NP (NP (PRP it))) (VP (VBZ 's) (ADJP (JJ impossible)) (S (VP (TO to) (VP (VB care)))))))
(ROOT (S (NP (NP (PRP ))) (VP (VBZ ) (ADJP (JJ )) (S (VP (TO ) (VP (VB )))))))