, you 're on the edge of your seat 
(ROOT (S (, ,) (NP (PRP you)) (VP (VBP 're) (PP (IN on) (NP (NP (DT the) (NN edge)) (PP (IN of) (NP (PRP$ your) (NN seat))))))))
(ROOT (S (, ) (NP (PRP )) (VP (VBP ) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (PRP$ ) (NN ))))))))