( It ( ( is ( ( ( ( extremely hot ) , ) ( much hotter ) ) ( than ( ( the surface ) ( of ( the Sun ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ is) (ADJP (ADJP (RB extremely) (JJ hot)) (, ,) (ADJP (RB much) (JJ hotter)) (PP (IN than) (NP (NP (DT the) (NN surface)) (PP (IN of) (NP (DT the) (NNP Sun))))))) (. .)))
It is extremely hot, much hotter than the surface of the Sun.
(ROOT (S (NP (NP (DT The) (NN surface)) (PP (IN of) (NP (DT the) (NN sun)))) (VP (VBZ is) (ADJP (RB much) (JJ hotter) (PP (IN than) (NP (NP (RB almost) (NN anything)) (PP (IN on) (NP (NN earth))))))) (. .)))