( ( that ( ( ( the particles ) ( of ( the solid ) ) ) ( have ( gained ( kinetic energy ) ) ) ) ) . )
(ROOT (FRAG (SBAR (IN that) (S (NP (NP (DT the) (NNS particles)) (PP (IN of) (NP (DT the) (JJ solid)))) (VP (VBP have) (VP (VBN gained) (NP (JJ kinetic) (NN energy)))))) (. .)))
that the particles of the solid have gained kinetic energy.
(ROOT (S (NP (NNP Solid)) (VP (VBZ exists) (SBAR (IN if) (S (NP (NNS particles)) (VP (VBP do) (RB not) (VP (VB have) (NP (ADJP (RB enough) (JJ kinetic)) (NN energy) (S (VP (TO to) (VP (VB overcome) (NP (NP (DT the) (NN force)) (PP (IN of) (NP (NP (NN attraction)) (PP (IN between) (NP (PRP them))))))))))))))) (. .)))