( ( At ( ( the bottom ) ( of ( the epidermis ) ) ) ) ( ( are ( ( ( the melanocytes ) , ) ( ( the cells ) ( that ( produce ( ( ( melanin &#150; ) ( the ( dark-colored pigment ) ) ) ( of skin ) ) ) ) ) ) ) . ) )
(ROOT (SINV (PP (IN At) (NP (NP (DT the) (NN bottom)) (PP (IN of) (NP (DT the) (NNS epidermis))))) (VP (VBP are)) (NP (NP (DT the) (NNS melanocytes)) (, ,) (NP (NP (DT the) (NNS cells)) (SBAR (WHNP (WDT that)) (S (VP (VBP produce) (NP (NP (QP (CD melanin) (CD &#150;)) (DT the) (JJ dark-colored) (NN pigment)) (PP (IN of) (NP (NN skin))))))))) (. .)))
At the bottom of the epidermis are the melanocytes, the cells that produce melanin &#150; the dark-colored pigment of skin.
(ROOT (S (NP (NNS Melanocytes)) (VP (VBP are) (VP (VBN located) (PP (IN in) (NP (NP (DT the) (JJ bottom) (NN layer)) (PP (IN of) (NP (DT the) (NNS epidermis))))))) (. .)))