(S (S (BASENP (NNP Rijsberman)) (VP (VBD said) (SBAR (S (NP (BASENP (NN water) (NN scarcity)) (PP (IN in) (BASENP (NNP Africa)))) (VP (VBD was) (VP (VBN caused) (PP (IN by) (NP (BASENP (DT a) (NN lack)) (PP (IN of) (NP (BASENP (NN infrastructure)) (SBAR (S (VP (TO to) (VP (VP (VB get) (BASENP (DT the) (NN water))) (PP (TO to) (NP (BASENP (DT the) (NNS people)) (SBAR (WHNP (WP who)) (S (VP (VBD needed) (BASENP (PRP it))))))))))))))))))))) (PERIOD .))