no i i just painted
( ( no ( i i ) ) ( just painted ) )
(ROOT (X (NP (DT no) (FW i) (FW i)) (SBAR (RB just) (S (VP (VBD painted))))))
I just painted a huge mural depicting a tiger empaling a small dog. 
( I ( just ( ( painted ( ( a ( huge mural ) ) ( ( depicting ( a tiger ) ) ( empaling ( a ( small dog ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (PRP I)) (ADVP (RB just)) (VP (VBD painted) (NP (NP (DT a) (JJ huge) (NN mural)) (VP (VBG depicting) (NP (DT a) (NN tiger)) (S (VP (VBG empaling) (NP (DT a) (JJ small) (NN dog))))))) (. .)))