( ( The water ) ( ( is ( used ( ( the ( next ( time someone ) ) ) ( flushes ( a toilet ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN water)) (VP (VBZ is) (VP (VBN used) (SBAR (S (NP (DT the) (JJ next) (NN time) (NN someone)) (VP (VBZ flushes) (NP (DT a) (NN toilet))))))) (. .)))
The water is used the next time someone flushes a toilet.
(ROOT (S (NP (NP (DT The) (NN action)) (PP (IN of) (S (VP (VBG flushing) (NP (DT the) (NN toilet))))) (, ,) (VP (VBN performed) (NP (JJ multiple) (NNS times)) (ADVP (RB daily))) (, ,)) (VP (VBZ is) (NP (NP (DT the) (ADJP (JJ single) (JJS biggest)) (NN use)) (PP (IN of) (NP (NP (NN water)) (PP (IN in) (NP (DT the) (NN home))))))) (. .)))