In some plants, the carts may contain up to a day's worth of work.
( ( In ( some plants ) ) ( , ( ( the carts ) ( ( may ( ( contain up ) ( to ( ( ( a ( day 's ) ) worth ) ( of work ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (DT some) (NNS plants))) (, ,) (NP (DT the) (NNS carts)) (VP (MD may) (VP (VB contain) (PRT (RP up)) (PP (TO to) (NP (NP (NP (DT a) (NN day) (POS 's)) (NN worth)) (PP (IN of) (NP (NN work))))))) (. .)))
Carts never contain more than a couple hour's worth of work in any plants.
( Carts ( never ( ( contain ( ( ( more ( ( than a ) couple ) ) ( ( hour 's ) worth ) ) ( of ( work ( in ( any plants ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NNS Carts)) (ADVP (RB never)) (VP (VBP contain) (NP (NP (QP (JJR more) (IN than) (DT a) (NN couple)) (NP (NN hour) (POS 's)) (NN worth)) (PP (IN of) (NP (NP (NN work)) (PP (IN in) (NP (DT any) (NNS plants))))))) (. .)))