Even for basic products, demand varies from day to day and week to week.
( ( Even ( for ( basic products ) ) ) ( , ( demand ( ( ( varies ( from ( day ( to ( ( day and ) week ) ) ) ) ) ( to week ) ) . ) ) ) )
(ROOT (S (PP (RB Even) (IN for) (NP (JJ basic) (NNS products))) (, ,) (NP (NN demand)) (VP (VBZ varies) (PP (IN from) (NP (NP (NN day)) (PP (TO to) (NP (NN day) (CC and) (NN week))))) (PP (TO to) (NP (NN week)))) (. .)))
Only the most complex products have demand that varies from day to day.
( Only ( ( the ( ( most complex ) products ) ) ( ( have ( demand ( that ( ( varies ( from day ) ) ( to day ) ) ) ) ) . ) ) )
(ROOT (S (RB Only) (NP (DT the) (ADJP (RBS most) (JJ complex)) (NNS products)) (VP (VBP have) (NP (NP (NN demand)) (SBAR (WHNP (WDT that)) (S (VP (VBZ varies) (PP (IN from) (NP (NN day))) (PP (TO to) (NP (NN day)))))))) (. .)))