( ( Whether ( ( a material ) ( is ( in ( the gas ) ) ) ) ) ( , ( ( ( ( liquid or ) solid ) phase ) ( ( is ( determined ( by ( ( ( the ( ambient temperature ) ) and ) pressure ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Whether) (S (NP (DT a) (NN material)) (VP (VBZ is) (PP (IN in) (NP (DT the) (NN gas)))))) (, ,) (NP (ADJP (JJ liquid) (CC or) (JJ solid)) (NN phase)) (VP (VBZ is) (VP (VBN determined) (PP (IN by) (NP (NP (DT the) (JJ ambient) (NN temperature)) (CC and) (NP (NN pressure)))))) (. .)))
Whether a material is in the gas, liquid or solid phase is determined by the ambient temperature and pressure.
(ROOT (S (NP (NNS Gases) (CC and) (NNS liquids)) (VP (VBP become) (NP (NNS solids)) (PP (IN at) (NP (JJ low) (NNS temperatures)))) (. .)))
Gases and liquids become solids at low temperatures.