( ( ( The brain ) ( that ( controls ( the ship ) ) ) ) ( ( allows ( one ( to ( see ( what ( ( ( the ( crystal eyes ) ) ( of ( the ship ) ) ) sees ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN brain)) (SBAR (WHNP (WDT that)) (S (VP (VBZ controls) (NP (DT the) (NN ship)))))) (VP (VBZ allows) (S (NP (PRP one)) (VP (TO to) (VP (VB see) (SBAR (WHNP (WP what)) (S (NP (NP (DT the) (NN crystal) (NNS eyes)) (PP (IN of) (NP (DT the) (NN ship)))) (VP (VBZ sees)))))))) (. .)))
The brain that controls the ship allows one to see what the crystal eyes of the ship sees.
(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)))))))))) (. .)))