( Sunlight ( and ( Skin ( Cancer . ) ) ) )
(ROOT (NP (NNP Sunlight) (CC and) (NNP Skin) (NNP Cancer) (. .)))
Sunlight and Skin Cancer.
(ROOT (S (NP (NNP Sunlight)) (VP (VBZ is) (NP (NP (DT the) (VBG leading) (NN cause)) (PP (IN of) (NP (NN skin) (NN cancer))))) (. .)))