( ( ( Flush toilets ) ( that ( use ( ( much less ) water ) ) ) ) ( ( are available ) . ) )
(ROOT (S (NP (NP (JJ Flush) (NNS toilets)) (SBAR (WHNP (WDT that)) (S (VP (VBP use) (NP (ADJP (RB much) (JJR less)) (NN water)))))) (VP (VBP are) (ADJP (JJ available))) (. .)))
Flush toilets that use much less water are available.
(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))))))) (. .)))