One he broke back to about the length of his forearm.
( One ( he ( ( ( broke back ) ( to ( ( about ( the length ) ) ( of ( his forearm ) ) ) ) ) . ) ) )
(ROOT (S (NP (PRP One)) (NP (PRP he)) (VP (VBD broke) (ADVP (RB back)) (PP (TO to) (NP (NP (RB about) (DT the) (NN length)) (PP (IN of) (NP (PRP$ his) (NN forearm)))))) (. .)))
He snapped something to be as long as his forearm.
( He ( ( ( snapped something ) ( to ( be ( as ( long ( as ( his forearm ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD snapped) (NP (NN something)) (S (VP (TO to) (VP (VB be) (ADJP (RB as) (JJ long) (PP (IN as) (NP (PRP$ his) (NN forearm)))))))) (. .)))