I thought it was lacquer thinner.
( I ( ( thought ( it ( ( was lacquer ) thinner ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBD thought) (SBAR (S (NP (PRP it)) (VP (VBD was) (ADVP (RB lacquer)) (ADJP (JJR thinner)))))) (. .)))
I really did think it was lacquer thinner.
( I ( really ( ( did ( think ( it ( ( was lacquer ) thinner ) ) ) ) . ) ) )
(ROOT (S (NP (PRP I)) (ADVP (RB really)) (VP (VBD did) (SBAR (S (VP (VBP think) (SBAR (S (NP (PRP it)) (VP (VBD was) (ADVP (RB lacquer)) (ADJP (JJR thinner))))))))) (. .)))