Thus, if a retailer follows the simplest strategy of ordering at the beginning of each week exactly those items that sold during the previous week, manufacturers must be prepared to ship an unknown number of items each week.
( Thus ( , ( ( if ( ( a retailer ) ( follows ( ( the ( simplest strategy ) ) ( of ( ( ordering ( at ( ( the beginning ) ( of ( each week ) ) ) ) ) ( ( exactly ( those items ) ) ( that ( sold ( during ( the ( previous week ) ) ) ) ) ) ) ) ) ) ) ) ( , ( manufacturers ( ( must ( be ( prepared ( to ( ( ship ( ( an ( unknown number ) ) ( of items ) ) ) ( each week ) ) ) ) ) ) . ) ) ) ) ) )
(ROOT (S (ADVP (RB Thus)) (, ,) (SBAR (IN if) (S (NP (DT a) (NN retailer)) (VP (VBZ follows) (NP (NP (DT the) (JJS simplest) (NN strategy)) (PP (IN of) (S (VP (VBG ordering) (PP (IN at) (NP (NP (DT the) (NN beginning)) (PP (IN of) (NP (DT each) (NN week))))) (NP (NP (RB exactly) (DT those) (NNS items)) (SBAR (WHNP (WDT that)) (S (VP (VBN sold) (PP (IN during) (NP (DT the) (JJ previous) (NN week)))))))))))))) (, ,) (NP (NNS manufacturers)) (VP (MD must) (VP (VB be) (VP (VBN prepared) (S (VP (TO to) (VP (VB ship) (NP (NP (DT an) (JJ unknown) (NN number)) (PP (IN of) (NP (NNS items)))) (NP (DT each) (NN week)))))))) (. .)))
Manufacturers shouldn't expect to know the number of items for every week in advance.
( Manufacturers ( ( ( should n't ) ( expect ( to ( know ( ( the number ) ( of ( items ( for ( ( every week ) ( in advance ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Manufacturers)) (VP (MD should) (RB n't) (VP (VB expect) (S (VP (TO to) (VP (VB know) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NNS items)) (PP (IN for) (NP (NP (DT every) (NN week)) (PP (IN in) (NP (NN advance))))))))))))) (. .)))