( ( ( These ( plates float ) ) ( on ( ( a layer ) ( of ( the mantle ) ) ) ) ) ( ( called ( the Asthenosphere ) ) . ) )
(ROOT (S (NP (NP (DT These) (JJ plates) (NN float)) (PP (IN on) (NP (NP (DT a) (NN layer)) (PP (IN of) (NP (DT the) (NN mantle)))))) (VP (VBD called) (NP (DT the) (NN Asthenosphere))) (. .)))
These plates float on a layer of the mantle called the Asthenosphere.
(ROOT (S (NP (NNP Mantle)) (VP (VBZ is) (NP (NP (DT the) (NN layer)) (PP (IN of) (NP (NP (NN tissue)) (PP (IN between) (NP (DT the) (NN body) (CC and) (NN shell))))))) (. .)))