( ( The ( human body ) ) ( ( can ( ( survive ( several weeks ) ) ( ( ( without food ) ( but only ) ) ( ( a ( few days ) ) ( without ( water ( ( an ( adequate supply ) ) ( of ( fresh water ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ human) (NN body)) (VP (MD can) (VP (VB survive) (NP (JJ several) (NNS weeks)) (PP (PP (IN without) (NP (NN food))) (CONJP (CC but) (RB only)) (PP (NP (DT a) (JJ few) (NNS days)) (IN without) (NP (NP (NN water)) (NP (NP (DT an) (JJ adequate) (NN supply)) (PP (IN of) (NP (JJ fresh) (NN water))))))))) (. .)))
The human body can survive several weeks without food but only a few days without water an adequate supply of fresh water.
(ROOT (S (NP (JJS Most) (NNS people)) (VP (MD can) (VP (VB survive) (NP (QP (RB only) (DT a) (JJ few)) (NNS days)) (PP (IN without) (NP (NN water))))) (. .)))