( ( Ultraviolet radiation ) ( ( ( ( can ( cause ( skin cancer ) ) ) and ) cataracts ) . ) )
(ROOT (S (NP (JJ Ultraviolet) (NN radiation)) (VP (VP (MD can) (VP (VB cause) (NP (NN skin) (NN cancer)))) (CC and) (VP (VBZ cataracts))) (. .)))
Ultraviolet radiation can cause skin cancer and cataracts.
(ROOT (S (NP (NP (NNP Exposure)) (PP (TO to) (NP (JJ ultraviolet) (NN radiation)))) (VP (MD can) (VP (VP (VB increase) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NN pigment)))) (PP (IN in) (NP (DT the) (NN skin)))) (CC and) (VP (VB make) (S (NP (PRP it)) (VP (VB appear) (NP (JJR darker))))))) (. .)))