( ( The brain ) ( ( elects ( to ( ( see only ) ( with ( the ( stronger eye ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN brain)) (VP (VBZ elects) (S (VP (TO to) (VP (VB see) (ADVP (RB only)) (PP (IN with) (NP (DT the) (JJR stronger) (NN eye))))))) (. .)))
The brain elects to see only with the stronger eye.
(ROOT (S (NP (NNS Brain) (CC and) (NNS eyes)) (VP (VBP are) (S (NP (DT the) (NNS organs)) (VP (VB work) (PRT (RP together)) (S (VP (TO to) (VP (VB allow) (S (NP (PRP us)) (VP (TO to) (VP (VB see)))))))))) (. .)))