( ( ( ( ( ( ( The ( middle layer ) ) ( of ( the earth ) ) ) ( is ( called ( the mantle ) ) ) ) , ) and ) ( ( the ( outer layer ) ) ( is ( the crust ) ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (JJ middle) (NN layer)) (PP (IN of) (NP (DT the) (NN earth)))) (VP (VBZ is) (VP (VBN called) (NP (DT the) (NN mantle))))) (, ,) (CC and) (S (NP (DT the) (JJ outer) (NN layer)) (VP (VBZ is) (NP (DT the) (NN crust)))) (. .)))
The middle layer of the earth is called the mantle , and the outer layer is the crust.
(ROOT (S (NP (NP (DT The) (JJ mantle) (NN layer)) (PP (IN of) (NP (NN earth)))) (VP (VBZ is) (VP (VBN located) (ADVP (RB just)) (PP (IN below) (NP (DT the) (NN crust))))) (. .)))
The mantle layer of earth is located just below the crust.