( Hail ( ( is ( ( ( solid balls ) ( of ( ( water and ) dust ) ) ) ( falling ( from ( the sky ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Hail)) (VP (VBZ is) (NP (NP (JJ solid) (NNS balls)) (PP (IN of) (NP (NN water) (CC and) (NN dust))) (VP (VBG falling) (PP (IN from) (NP (DT the) (NN sky)))))) (. .)))
Hail is solid balls of water and dust falling from the sky.
(ROOT (S (NP (NP (NNP Hail)) (PP (IN during) (NP (DT a) (NN storm)))) (VP (VBZ describes) (NP (NP (NN water)) (PP (IN in) (NP (DT a) (JJ solid) (NN state))))) (. .)))