Indeed, the central purpose of language, from its moment of emergence, is  communication, social contact, infiuencing surrounding individuals. 
( Indeed ( , ( ( ( ( ( ( the ( central purpose ) ) ( of language ) ) , ) ( from ( ( its moment ) ( of emergence ) ) ) ) , ) ( ( is ( ( ( ( communication , ) ( social contact ) ) , ) ( infiuencing ( surrounding individuals ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Indeed)) (, ,) (NP (NP (DT the) (JJ central) (NN purpose)) (PP (IN of) (NP (NN language))) (, ,) (PP (IN from) (NP (NP (PRP$ its) (NN moment)) (PP (IN of) (NP (NN emergence))))) (, ,)) (VP (VBZ is) (NP (NP (NP (NN communication)) (, ,) (NP (JJ social) (NN contact)) (, ,)) (VP (VBG infiuencing) (S (VP (VBG surrounding) (NP (NNS individuals))))))) (. .)))
Language has three purposes: communication, social contact and influence.
( Language ( ( has ( ( ( three purposes ) : ) ( ( ( ( communication , ) ( social contact ) ) and ) influence ) ) ) . ) )
(ROOT (S (NP (NNP Language)) (VP (VBZ has) (NP (NP (CD three) (NNS purposes)) (: :) (NP (NP (NN communication)) (, ,) (NP (JJ social) (NN contact)) (CC and) (NP (NN influence))))) (. .)))