You were there, the upchuck wagon.
( You ( ( were ( ( there , ) ( the ( upchuck wagon ) ) ) ) . ) )
(ROOT (S (NP (PRP You)) (VP (VBD were) (NP (NP (RB there)) (, ,) (NP (DT the) (NN upchuck) (NN wagon)))) (. .)))
You were there.
( You ( ( were there ) . ) )
(ROOT (S (NP (PRP You)) (VP (VBD were) (ADVP (RB there))) (. .)))