Such retailers can also gather data about customer demographics, past purchases, and responses to potential substitute items, all of which add up to a gold mine of information about consumer preferences.
( ( Such retailers ) ( ( ( can also ) ( ( ( gather data ) ( about ( ( ( ( ( ( customer demographics ) , ) ( past purchases ) ) , ) and ) responses ) ) ) ( to ( ( ( potential ( substitute items ) ) , ) ( ( all ( of which ) ) ( ( add up ) ( to ( ( a ( gold mine ) ) ( of ( information ( about ( consumer preferences ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Such) (NNS retailers)) (VP (MD can) (ADVP (RB also)) (VP (VB gather) (NP (NNS data)) (PP (IN about) (NP (NP (NN customer) (NNS demographics)) (, ,) (NP (JJ past) (NNS purchases)) (, ,) (CC and) (NP (NNS responses)))) (PP (TO to) (NP (NP (JJ potential) (NN substitute) (NNS items)) (, ,) (SBAR (WHNP (DT all) (WHPP (IN of) (WHNP (WDT which)))) (S (VP (VBP add) (PRT (RP up)) (PP (TO to) (NP (NP (DT a) (JJ gold) (NN mine)) (PP (IN of) (NP (NP (NN information)) (PP (IN about) (NP (NN consumer) (NNS preferences)))))))))))))) (. .)))
Past preferences don't give retailers much information about consumer preferences.
( ( Past preferences ) ( ( ( do n't ) ( ( give retailers ) ( ( much information ) ( about ( consumer preferences ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Past) (NNS preferences)) (VP (VBP do) (RB n't) (VP (VB give) (NP (NNS retailers)) (NP (NP (JJ much) (NN information)) (PP (IN about) (NP (NN consumer) (NNS preferences)))))) (. .)))