we can tell what it is supposed to be , but ca n't really call it a work of art . 
(ROOT (S (S (NP (PRP we)) (VP (MD can) (VP (VB tell) (SBAR (WHNP (WP what)) (S (NP (PRP it)) (VP (VBZ is) (VP (VBN supposed) (S (VP (TO to) (VP (VB be))))))))))) (, ,) (CC but) (VP (MD ca) (RB n't) (ADVP (RB really)) (VP (VB call) (NP (PRP it)) (S (NP (NP (DT a) (NN work)) (PP (IN of) (NP (NN art))))))) (. .)))
(ROOT (S (S (NP (PRP )) (VP (MD ) (VP (VB ) (SBAR (WHNP (WP )) (S (NP (PRP )) (VP (VBZ ) (VP (VBN ) (S (VP (TO ) (VP (VB ))))))))))) (, ) (CC ) (VP (MD ) (RB ) (ADVP (RB )) (VP (VB ) (NP (PRP )) (S (NP (NP (DT ) (NN )) (PP (IN ) (NP (NN ))))))) (. )))