( ( It ( 's ( melting point ) ) ) ( ( is ( ( -248.6 degrees ) ( ( ( Celsius and ) ( boiling point ) ) ( is ( ( -246.1 degrees ) Celsius ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It) (POS 's) (NN melting) (NN point)) (VP (VBZ is) (NP (NP (CD -248.6) (NNS degrees)) (SBAR (S (NP (NP (NNP Celsius)) (CC and) (NP (JJ boiling) (NN point))) (VP (VBZ is) (ADJP (NP (CD -246.1) (NNS degrees)) (JJ Celsius))))))) (. .)))
It's melting point is -248.6 degrees Celsius and boiling point is -246.1 degrees Celsius.
(ROOT (S (PP (IN In) (NP (NNS celsius))) (, ,) (NP (NP (DT the) (JJ boiling) (NN point)) (PP (IN of) (NP (NN water)))) (VP (VBZ is) (NP (QP (CD one) (CD hundred)) (NNS degrees))) (. .)))