( He ( ( trained ( ( ( eight hours ) ( a day ) ) ( ( pulling ( two tires ) ) ( to ( simulate ( ( the sled ) ( he ( would ( take ( to ( the ( North Pole ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (JJ trained) (NP (NP (NP (CD eight) (NNS hours)) (NP (DT a) (NN day))) (VP (VBG pulling) (NP (CD two) (NNS tires)) (S (VP (TO to) (VP (VB simulate) (NP (NP (DT the) (NN sled)) (SBAR (S (NP (PRP he)) (VP (MD would) (VP (VB take) (PP (TO to) (NP (DT the) (NNP North) (NNP Pole)))))))))))))) (. .)))
He trained eight hours a day pulling two tires to simulate the sled he would take to the North Pole.
(ROOT (S (NP (NP (DT The) (NN number)) (PP (IN of) (NP (NP (NN daylight) (NNS hours)) (NP (DT each) (NN day))))) (VP (MD would) (VP (VB be) (ADJP (ADJP (JJS greatest)) (PP (IN during) (NP (NP (DT the) (NN summer)) (PP (IN near) (NP (DT the) (NN north) (NN pole)))))))) (. .)))
The number of daylight hours each day would be greatest during the summer near the north pole.