, you know there 's something there . 
(ROOT (S (, ,) (NP (PRP you)) (VP (VBP know) (SBAR (S (NP (EX there)) (VP (VBZ 's) (NP (NN something)) (ADVP (RB there)))))) (. .)))
(ROOT (S (, ) (NP (PRP )) (VP (VBP ) (SBAR (S (NP (EX )) (VP (VBZ ) (NP (NN )) (ADVP (RB )))))) (. )))