Under the overmechanical assumptions of affirmative-action opponents themselves (and putting aside the racial IQ theories of Murray and some others), blacks would move up the list, and whites would move down.
( ( Under ( ( the ( overmechanical assumptions ) ) ( of ( ( affirmative-action opponents ) themselves ) ) ) ) ( ( -LRB- ( and ( ( ( putting aside ) ( ( the ( racial ( IQ theories ) ) ) ( of ( ( Murray and ) ( some others ) ) ) ) ) -RRB- ) ) ) ( , ( blacks ( ( ( ( ( would ( ( move up ) ( the list ) ) ) , ) and ) ( whites ( would ( move down ) ) ) ) . ) ) ) ) )
(ROOT (S (PP (IN Under) (NP (NP (DT the) (JJ overmechanical) (NNS assumptions)) (PP (IN of) (NP (NP (NN affirmative-action) (NNS opponents)) (ADVP (PRP themselves)))))) (PRN (-LRB- -LRB-) (CC and) (S (VP (VBG putting) (PRT (RP aside)) (NP (NP (DT the) (JJ racial) (NNP IQ) (NNS theories)) (PP (IN of) (NP (NP (NNP Murray)) (CC and) (NP (DT some) (NNS others))))))) (-RRB- -RRB-)) (, ,) (NP (NNS blacks)) (VP (MD would) (VP (VB move) (PRT (RP up)) (NP (DT the) (NN list)))) (, ,) (CC and) (S (NP (NNS whites)) (VP (MD would) (VP (VB move) (PRT (RP down))))) (. .)))
Affirmative action opponents say that whites would move down the list.
( ( Affirmative ( action opponents ) ) ( ( say ( that ( whites ( would ( ( move down ) ( the list ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Affirmative) (NN action) (NNS opponents)) (VP (VBP say) (SBAR (IN that) (S (NP (NNS whites)) (VP (MD would) (VP (VB move) (PRT (RP down)) (NP (DT the) (NN list))))))) (. .)))