( ( ( ( ( Language devices ) , ) ( such ( as ( ( words and ) ( syntactic forms ) ) ) ) ) , ) ( ( are ( like ( ( the ( human heart ) ) ( ( in that ) ( they ( have ( survived ( because ( they ( have ( ( provided ( certain functions ) ) ( to humans ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Language) (NNS devices)) (, ,) (PP (JJ such) (IN as) (NP (NP (NNS words)) (CC and) (NP (JJ syntactic) (NNS forms)))) (, ,)) (VP (VBP are) (PP (IN like) (NP (NP (DT the) (JJ human) (NN heart)) (SBAR (WHPP (IN in) (WHNP (WDT that))) (S (NP (PRP they)) (VP (VBP have) (VP (VBN survived) (SBAR (IN because) (S (NP (PRP they)) (VP (VBP have) (VP (VBN provided) (NP (JJ certain) (NNS functions)) (PP (TO to) (NP (NNS humans)))))))))))))) (. .)))
Language devices, such as words and syntactic forms, are like the human heart in that they have survived because they have provided certain functions to humans.
(ROOT (S (PP (IN In) (NP (NNS humans))) (, ,) (NP (DT the) (NN heart)) (VP (VBZ is) (NP (DT the) (JJ first) (NN organ) (S (VP (TO to) (VP (VP (VB form)) (CC and) (VP (VB become) (ADJP (JJ functional)))))))) (. .)))