( ( ( ( ( ( ( Looking directly ) ( at ( the Sun ) ) ) ( can ( cause blindness ) ) ) , ) and ) ( even ( ( a ( ( partially eclipsed ) Sun ) ) ( ( is still ) ( very ( , ( very bright ) ) ) ) ) ) ) . )
(ROOT (S (S (S (VP (VBG Looking) (ADVP (RB directly)) (PP (IN at) (NP (DT the) (NNP Sun))))) (VP (MD can) (VP (VB cause) (NP (NN blindness))))) (, ,) (CC and) (S (ADVP (RB even)) (NP (DT a) (ADJP (RB partially) (JJ eclipsed)) (NNP Sun)) (VP (VBZ is) (ADVP (RB still)) (ADJP (RB very) (, ,) (RB very) (JJ bright)))) (. .)))
Looking directly at the Sun can cause blindness, and even a partially eclipsed Sun is still very, very bright.
(ROOT (S (S (VP (VBG Looking) (ADVP (RB directly)) (PP (IN at) (NP (DT the) (NN sun))))) (VP (MD can) (VP (VB cause) (NP (NN blindness)))) (. .)))