( This ( ( causes ( ( the part ) ( of ( ( the body ) ( that ( is ( ( controlled ( by ( ( the ( affected area ) ) ( of ( the brain ) ) ) ) ) ( to ( stop functioning ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (VBZ causes) (NP (NP (DT the) (NN part)) (PP (IN of) (NP (NP (DT the) (NN body)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN controlled) (PP (IN by) (NP (NP (DT the) (JJ affected) (NN area)) (PP (IN of) (NP (DT the) (NN brain))))) (S (VP (TO to) (VP (VB stop) (NP (NN functioning))))))))))))) (. .)))
This causes the part of the body that is controlled by the affected area of the brain to stop functioning.
(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))))))) (. .)))