Essentially, he proposes that the parent of all Indo-European languages was itself born in central Anatolia, whence it spread eastward, westward, and northward, being modified by the influences of the languages with which it came into contact, till it ultimately emerged in its recognizable, modern manifestations which we categorize into Germanic, Hellenic, Italic, Indo-Iranian, Anatolian, Armenian, Celtic, Tocharian, Albanian, and BaltoSlavic.
( Essentially ( ( , ( ( he ( proposes ( that ( ( ( the parent ) ( of ( all ( Indo-European languages ) ) ) ) ( was ( itself ( born ( in ( central Anatolia ) ) ) ) ) ) ) ) ) , ) ) ( ( whence ( it ( ( ( ( ( ( spread eastward ) , ) ( ( ( ( westward , ) and ) northward ) , ) ) ( being ( modified ( by ( ( the influences ) ( of ( ( the languages ) ( ( with which ) ( it ( came ( into contact ) ) ) ) ) ) ) ) ) ) ) , ) ( till ( it ( ultimately ( ( emerged ( in ( its ( recognizable ( , ( modern manifestations ) ) ) ) ) ) ( which ( we ( categorize ( into ( ( ( Germanic ( , ( Hellenic ( , ( Italic ( , ( Indo-Iranian ( , ( Anatolian ( , ( Armenian ( , ( Celtic ( , ( Tocharian ( , ( Albanian , ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) and ) BaltoSlavic ) ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (RB Essentially)) (PRN (, ,) (S (NP (PRP he)) (VP (VBZ proposes) (SBAR (IN that) (S (NP (NP (DT the) (NN parent)) (PP (IN of) (NP (DT all) (JJ Indo-European) (NNS languages)))) (VP (VBD was) (VP (NP (PRP itself)) (VBN born) (PP (IN in) (NP (JJ central) (NNP Anatolia))))))))) (, ,)) (VP (VB whence) (S (NP (PRP it)) (VP (VB spread) (ADVP (RB eastward)) (, ,) (ADVP (ADVP (RB westward)) (, ,) (CC and) (ADVP (RB northward)) (, ,)) (S (VP (VBG being) (VP (VBN modified) (PP (IN by) (NP (NP (DT the) (NNS influences)) (PP (IN of) (NP (NP (DT the) (NNS languages)) (SBAR (WHPP (IN with) (WHNP (WDT which))) (S (NP (PRP it)) (VP (VBD came) (PP (IN into) (NP (NN contact))))))))))))) (, ,) (SBAR (IN till) (S (NP (PRP it)) (ADVP (RB ultimately)) (VP (VBD emerged) (PP (IN in) (NP (PRP$ its) (JJ recognizable) (, ,) (JJ modern) (NNS manifestations))) (SBAR (WHNP (WDT which)) (S (NP (PRP we)) (VP (VBP categorize) (PP (IN into) (NP (NP (NNP Germanic) (, ,) (NNP Hellenic) (, ,) (NNP Italic) (, ,) (NNP Indo-Iranian) (, ,) (NNP Anatolian) (, ,) (NNP Armenian) (, ,) (NNP Celtic) (, ,) (NNP Tocharian) (, ,) (NNP Albanian) (, ,)) (CC and) (NP (NNP BaltoSlavic))))))))))))) (. .)))
He proposes that all Indo-European languages originated in central Anatolia.
( He ( ( proposes ( that ( ( all ( Indo-European languages ) ) ( originated ( in ( central Anatolia ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBZ proposes) (SBAR (IN that) (S (NP (DT all) (JJ Indo-European) (NNS languages)) (VP (VBP originated) (PP (IN in) (NP (JJ central) (NNP Anatolia))))))) (. .)))