( Water ( ( only ( to ( keep ( ( the soil ) ( slightly moist ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Water)) (VP (ADVP (RB only)) (S (VP (TO to) (VP (VB keep) (S (NP (DT the) (NN soil)) (ADJP (RB slightly) (JJ moist))))))) (. .)))
Water only to keep the soil slightly moist.
(ROOT (S (NP (NNP Water) (NNS molds)) (ADVP (RB mostly)) (VP (VBP live) (PP (IN in) (NP (NN water) (CC or) (NN moist) (NN soil)))) (. .)))