( ( surface ( of ( the sun ) ) ) . )
(ROOT (NP (NP (NN surface)) (PP (IN of) (NP (DT the) (NN sun))) (. .)))
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))))))) (. .)))