sentence1_binary_parse: ( ( ( The copperhead ) ( like ( all ( other snakes ) ) ) ) ( ( has ( ( a ( forked tongue ) ) ( which ( it ( uses ( to ( ( smell and ) touch ) ) ) ) ) ) ) . ) )
sentence1_parse: (ROOT (S (NP (NP (DT The) (NN copperhead)) (PP (IN like) (NP (DT all) (JJ other) (NNS snakes)))) (VP (VBZ has) (NP (NP (DT a) (JJ forked) (NN tongue)) (SBAR (WHNP (WDT which)) (S (NP (PRP it)) (VP (VBZ uses) (PP (TO to) (NP (NN smell) (CC and) (NN touch)))))))) (. .)))
sentence1: The copperhead like all other snakes has a forked tongue which it uses to smell and touch.
sentence2_parse: (ROOT (S (NP (NNS Snakes)) (VP (VBP use) (NP (PRP$ their) (NN tongue)) (PP (TO to) (NP (NN smell) (NNS things)))) (. .)))
sentence2: Snakes use their tongue to smell things.