( ( One way ) ( ( is ( ( through ( water conservation ) ) ( , ( or ( using ( less water ) ) ) ) ) ) . ) )
(ROOT (S (NP (CD One) (NN way)) (VP (VBZ is) (UCP (PP (IN through) (NP (NN water) (NN conservation))) (, ,) (CC or) (S (VP (VBG using) (NP (JJR less) (NN water)))))) (. .)))
One way is through water conservation, or using less water.
(ROOT (S (NP (DT The) (JJS best) (NN way) (NNS humans)) (VP (MD can) (VP (VB conserve) (SBAR (S (NP (NN water)) (VP (VBZ is) (S (VP (TO to) (VP (VB use) (NP (JJR less)))))))))) (. .)))