( ( ( CHARLES ' ) ( LAW ( This law ) ) ) ( ( states ( that ( ( if ( ( ( a gas ) ( under ( constant pressure ) ) ) ( ( is so ) ( confined ( that ( it ( may expand ) ) ) ) ) ) ) ( , ( ( ( an increase ) ( in ( the temperature ) ) ) ( will ( cause ( ( an increase ) ( in volume ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP CHARLES) (POS ')) (NNP LAW) (NNP This) (NN law)) (VP (VBZ states) (SBAR (IN that) (S (SBAR (IN if) (S (NP (NP (DT a) (NN gas)) (PP (IN under) (NP (JJ constant) (NN pressure)))) (VP (VBZ is) (ADVP (RB so)) (VP (VBN confined) (SBAR (IN that) (S (NP (PRP it)) (VP (MD may) (VP (VB expand))))))))) (, ,) (NP (NP (DT an) (NN increase)) (PP (IN in) (NP (DT the) (NN temperature)))) (VP (MD will) (VP (VB cause) (NP (NP (DT an) (NN increase)) (PP (IN in) (NP (NN volume))))))))) (. .)))
CHARLES' LAW This law states that if a gas under constant pressure is so confined that it may expand, an increase in the temperature will cause an increase in volume.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NP (NN temperature) (NNS increases)) (PP (CC but) (NP (NP (NN amount)) (PP (IN of) (NP (NP (NN gas)) (CC and) (NP (PRP$ its) (NN pressure))))))) (VP (VBP are) (ADJP (JJ constantvolume))))) (NP (NNS increases)) (VP (VBZ happens) (PP (TO to) (NP (NP (DT the) (NN volume)) (PP (IN of) (NP (DT the) (NN gas)))))) (. .)))