( Geothermal ( Energy ; ) )
(ROOT (NP (NNP Geothermal) (NNP Energy) (: ;)))
Geothermal Energy ;
(ROOT (S (NP (JJ Geothermal) (NN energy) (NN energy)) (VP (VP (VBZ is) (ADJP (JJ clean))) (CC and) (VP (VBZ does) (RB not) (VP (VB release) (NP (NN greenhouse) (NNS gases))))) (. .)))