's critic-proof , simply because it aims so low 
(ROOT (FRAG (NP (VP (POS 's)) (NN critic) (HYPH -) (NN proof)) (, ,) (SBAR (ADVP (RB simply)) (IN because) (S (NP (PRP it)) (VP (VBZ aims) (ADJP (RB so) (JJ low)))))))
(ROOT (FRAG (NP (VP (POS )) (NN ) (HYPH ) (NN )) (, ) (SBAR (ADVP (RB )) (IN ) (S (NP (PRP )) (VP (VBZ ) (ADJP (RB ) (JJ )))))))