( ( largest part ) ( of ( ( the brain ) ( that ( controls ( ( conscious functions ) ( such ( as ( ( reasoning and ) sight ) ) ) ) ) ) ) ) )
(ROOT (NP (NP (JJS largest) (NN part)) (PP (IN of) (NP (NP (DT the) (NN brain)) (SBAR (WHNP (WDT that)) (S (VP (VBZ controls) (NP (NP (JJ conscious) (NNS functions)) (PP (JJ such) (IN as) (NP (NN reasoning) (CC and) (NN sight)))))))))))
largest part of the brain that controls conscious functions such as reasoning and sight
(ROOT (S (ADVP (RB Not) (RB surprisingly)) (, ,) (NP (JJ controlling) (NN flight)) (VP (VBZ is) (NP (NP (DT the) (NN function)) (PP (IN of) (NP (NP (DT the) (ADJP (RBS most) (JJ developed)) (NN part)) (PP (IN of) (NP (NP (DT a) (NN bird) (POS 's)) (NN brain))))))) (. .)))