( But ( somewhere ( , ( ( ( ( ( about ( five thousand ) ) years ) ago ) ( in ( our ( cultural history ) ) ) ) ( , ( ( ( the relationship ) ( between ( ( biology and ) culture ) ) ) ( ( began ( to ( alter radically ) ) ) . ) ) ) ) ) ) )
(ROOT (S (CC But) (ADVP (RB somewhere)) (, ,) (PP (ADVP (NP (QP (RB about) (CD five) (CD thousand)) (NNS years)) (RB ago)) (IN in) (NP (PRP$ our) (JJ cultural) (NN history))) (, ,) (NP (NP (DT the) (NN relationship)) (PP (IN between) (NP (NN biology) (CC and) (NN culture)))) (VP (VBD began) (S (VP (TO to) (VP (VB alter) (ADVP (RB radically)))))) (. .)))
But somewhere, about five thousand years ago in our cultural history, the relationship between biology and culture began to alter radically.
(ROOT (S (NP (CD Five) (JJ mass) (NNS distinctions)) (VP (VBP have) (ADVP (RB radically)) (VP (VBN altered) (NP (NP (DT the) (NN history)) (PP (IN of) (NP (NN life)))))) (. .)))