( ( ( The ( first layer ) ) ( of skin ) ) ( ( is ( called ( ( ( the Epidermis ) , ) ( which ( lays ( on ( the Dermis ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ first) (NN layer)) (PP (IN of) (NP (NN skin)))) (VP (VBZ is) (VP (VBN called) (NP (NP (DT the) (NNPS Epidermis)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ lays) (PP (IN on) (NP (DT the) (NNPS Dermis))))))))) (. .)))
The first layer of skin is called the Epidermis, which lays on the Dermis.
(ROOT (S (NP (DT The) (NN skin)) (VP (VBZ is) (VP (VBN made) (PP (IN of) (NP (NP (CD two) (NNS layers)) (: :) (NP (NNS epidermis) (CC and) (NNS dermis)))))) (. .)))