( ( ( Causes ( of ( Skin ( Cancer ( Excessive exposure ) ) ) ) ) ( to sunlight ) ) ( ( is ( ( the ( single ( ( most important ) factor ) ) ) ( ( associated ( with ( skin cancers ) ) ) ( on ( ( ( ( ( ( the face ) , ) eyelids ) , ) and ) arms ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Causes)) (PP (IN of) (NP (NNP Skin) (NNP Cancer) (NNP Excessive) (NN exposure))) (PP (TO to) (NP (NN sunlight)))) (VP (VBZ is) (NP (NP (DT the) (JJ single) (ADJP (RBS most) (JJ important)) (NN factor)) (VP (VBN associated) (PP (IN with) (NP (NN skin) (NNS cancers))) (PP (IN on) (NP (NP (DT the) (NN face)) (, ,) (NP (NNS eyelids)) (, ,) (CC and) (NP (NNS arms))))))) (. .)))
Causes of Skin Cancer Excessive exposure to sunlight is the single most important factor associated with skin cancers on the face, eyelids, and arms.
(ROOT (S (NP (NNP Sunlight)) (VP (VBZ is) (NP (NP (DT the) (VBG leading) (NN cause)) (PP (IN of) (NP (NN skin) (NN cancer))))) (. .)))