( ( Because ( ( subducted plates ) ( are ( part ( of ( ( the ( Earth 's ) ) crust ) ) ) ) ) ) ( , ( they ( ( are ( much ( cooler ( than ( ( the ( hot ( , ( rocky material ) ) ) ) ( found ( below ( the surface ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Because) (S (NP (JJ subducted) (NNS plates)) (VP (VBP are) (NP (NP (NN part)) (PP (IN of) (NP (NP (DT the) (NN Earth) (POS 's)) (NN crust))))))) (, ,) (NP (PRP they)) (VP (VBP are) (ADJP (RB much) (JJ cooler) (PP (IN than) (NP (NP (DT the) (JJ hot) (, ,) (JJ rocky) (NN material)) (VP (VBN found) (PP (IN below) (NP (DT the) (NN surface)))))))) (. .)))
Because subducted plates are part of the Earth's crust, they are much cooler than the hot, rocky material found below the surface.
(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))))))) (. .)))