( This ( ( is ( ( the ( oldest part ) ) ( of ( ( ( the Brain ) , ) ( where ( ( most ( involuntary functions ) ) ( are ( controlled from ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (VBZ is) (NP (NP (DT the) (JJS oldest) (NN part)) (PP (IN of) (NP (NP (DT the) (NNP Brain)) (, ,) (SBAR (WHADVP (WRB where)) (S (NP (RBS most) (JJ involuntary) (NNS functions)) (VP (VBP are) (VP (VBN controlled) (PP (IN from)))))))))) (. .)))
This is the oldest part of the Brain, where most involuntary functions are controlled from.
(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))))))) (. .)))