( and ( ( diminishing ( supply ( of ( clean ( drinking water ) ) ) ) ) ; ) )
(ROOT (S (NP (NNP and)) (VP (VBG diminishing) (NP (NP (NN supply)) (PP (IN of) (NP (JJ clean) (NN drinking) (NN water))))) (: ;)))
and diminishing supply of clean drinking water;
(ROOT (S (NP (NP (QP (IN At) (JJS least) (CD 20)) (NN percent)) (PP (IN of) (NP (NP (DT the) (NN world) (POS 's)) (NNS people)))) (VP (VBP do) (RB not) (VP (VB have) (NP (NP (DT a) (JJ ready) (NN supply)) (PP (IN of) (NP (JJ clean) (NN drinking) (NN water)))))) (. .)))