as they used to say in the 1950s sci-fi movies , signs is a tribute to shyamalan 's gifts , which are such that we 'll keep watching the skies for his next project . 
(ROOT (S (SBAR (IN as) (S (NP (PRP they)) (VP (VBD used) (S (VP (TO to) (VP (VB say) (PP (IN in) (NP (DT the) (NNS 1950s) (NML (NN sci-) (NN fi)) (NNS movies))))))))) (, ,) (NP (NNS signs)) (VP (VBZ is) (NP (NP (DT a) (NN tribute)) (PP (IN to) (NP (NP (NP (NNP shyamalan) (POS 's)) (NNS gifts)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (ADJP (JJ such) (SBAR (IN that) (S (NP (PRP we)) (VP (MD 'll) (VP (VB keep) (S (VP (VBG watching) (NP (DT the) (NNS skies)) (PP (IN for) (NP (PRP$ his) (JJ next) (NN project))))))))))))))))) (. .)))
(ROOT (S (SBAR (IN ) (S (NP (PRP )) (VP (VBD ) (S (VP (TO ) (VP (VB ) (PP (IN ) (NP (DT ) (NNS ) (NML (NN ) (NN )) (NNS ))))))))) (, ) (NP (NNS )) (VP (VBZ ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NP (NP (NNP ) (POS )) (NNS )) (, ) (SBAR (WHNP (WDT )) (S (VP (VBP ) (ADJP (JJ ) (SBAR (IN ) (S (NP (PRP )) (VP (MD ) (VP (VB ) (S (VP (VBG ) (NP (DT ) (NNS )) (PP (IN ) (NP (PRP$ ) (JJ ) (NN ))))))))))))))))) (. )))