( These ( ( ( condense ( ( dew and ) fog ) ) ( to ( supply ( clean ( drinking water ) ) ) ) ) . ) )
(ROOT (S (NP (DT These)) (VP (VBP condense) (NP (NN dew) (CC and) (NN fog)) (S (VP (TO to) (VP (VB supply) (NP (JJ clean) (NN drinking) (NN water)))))) (. .)))
These condense dew and fog to supply 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)))))) (. .)))