( ( The Sun ) ( ( will ( expand ( ( so much ) ( that ( it ( will ( ( swallow up ) ( ( ( ( ( ( the ( planets Mercury ) ) , ) Venus ) , ) and ) ( the Earth ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Sun)) (VP (MD will) (VP (VB expand) (ADVP (ADVP (RB so) (RB much)) (SBAR (IN that) (S (NP (PRP it)) (VP (MD will) (VP (VB swallow) (PRT (RP up)) (NP (NP (DT the) (NNP planets) (NNP Mercury)) (, ,) (NP (NNP Venus)) (, ,) (CC and) (NP (DT the) (NN Earth)))))))))) (. .)))
The Sun will expand so much that it will swallow up the planets Mercury, Venus, and the Earth.
(ROOT (S (NP (NNP Mercury)) (VP (VBZ is) (ADVP (RB always)) (ADJP (ADJP (JJR closer)) (PP (TO to) (NP (DT the) (NN sun)))) (SBAR (IN than) (S (NP (PRP it)) (VP (VBZ is) (PP (TO to) (NP (NN earth))))))) (. .)))
Mercury is always closer to the sun than it is to earth.