( Mercury ( ( is ( ( a ( metallic element ) ) ( that ( ( ( ( is liquid ) ( at ( room temperature ) ) ) , ) ( making ( it ( possible ( for ( the ( liquid ( to ( move ( within ( the ( barometer ( to ( ( signify ( the variations ) ) ( in ( pressure levels ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Mercury)) (VP (VBZ is) (NP (NP (DT a) (JJ metallic) (NN element)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (ADJP (JJ liquid)) (PP (IN at) (NP (NN room) (NN temperature))) (, ,) (S (VP (VBG making) (S (NP (PRP it)) (ADJP (JJ possible) (PP (IN for) (NP (DT the) (NN liquid) (S (VP (TO to) (VP (VB move) (PP (IN within) (NP (DT the) (NN barometer) (S (VP (TO to) (VP (VB signify) (NP (DT the) (NNS variations)) (PP (IN in) (NP (NN pressure) (NNS levels)))))))))))))))))))))) (. .)))
Mercury is a metallic element that is liquid at room temperature, making it possible for the liquid to move within the barometer to signify the variations in pressure levels.
(ROOT (S (NP (NNP Mercury)) (VP (VBZ is) (RB not) (NP (DT a) (JJ solid) (ADJP (RB even) (PP (IN at) (NP (NN room)))) (NN temperature))) (. .)))