( ( The ( water droplets ) ) ( ( may ( form clouds ) ) . ) )
(ROOT (S (NP (DT The) (NN water) (NNS droplets)) (VP (MD may) (VP (VB form) (NP (NNS clouds)))) (. .)))
The water droplets may form clouds.
(ROOT (S (NP (NNS Clouds)) (VP (VBP are) (VP (VBN formed) (PP (IN from) (NP (NN water) (NNS droplets))))) (. .)))