( Mercury ( ( ( ( has ( many ( industrial uses ) ) ) , ) ( as ( it ( is ( ( the ( only metal ) ) ( that ( is ( a ( ( liquid ( at room ) ) temperature ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Mercury)) (VP (VBZ has) (NP (JJ many) (JJ industrial) (NNS uses)) (, ,) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ is) (NP (NP (DT the) (JJ only) (NN metal)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (NP (DT a) (ADJP (JJ liquid) (PP (IN at) (NP (NN room)))) (NN temperature)))))))))) (. .)))
Mercury has many industrial uses, as it is the only metal that is a liquid at room temperature.
(ROOT (S (NP (NNP Mercury)) (VP (VBZ is) (NP (NP (DT the) (CD one) (NN metal)) (SBAR (WHNP (WDT that)) (S (VP (VBZ melts) (PP (IN below) (NP (NN room) (NN temperature)))))))) (. .)))