( ( ( The ( surface temperature ) ) ( of Venus ) ) ( is ( ( 800 F ) ( compared ( to ( ( ( the ( Earth 's ) ) mean ) ( of ( 50 F. ) ) ) ) ) ) ) )
(ROOT (S (NP (NP (DT The) (NN surface) (NN temperature)) (PP (IN of) (NP (NNP Venus)))) (VP (VBZ is) (NP (NP (CD 800) (NN F)) (PP (VBN compared) (PP (TO to) (NP (NP (NP (DT the) (NN Earth) (POS 's)) (NN mean)) (PP (IN of) (NP (CD 50) (NNS F.))))))))))
The surface temperature of Venus is 800 F compared to the Earth's mean of 50 F.
(ROOT (S (NP (NNP Venus)) (VP (VBZ has) (NP (NP (DT a) (JJR warmer) (JJ average) (NN surface) (NN temperature)) (PP (IN than) (NP (NN earth))))) (. .)))
Venus has a warmer average surface temperature than earth.