( ( ( ( ( At ( this latitude ) ) ( ( winter days ) ( are short ) ) ) and ) ( ( summer days ) ( have ( ( 20 hours ) ( of daylight ) ) ) ) ) . )
(ROOT (S (S (PP (IN At) (NP (DT this) (NN latitude))) (NP (NN winter) (NNS days)) (VP (VBP are) (ADJP (JJ short)))) (CC and) (S (NP (NN summer) (NNS days)) (VP (VBP have) (NP (NP (CD 20) (NNS hours)) (PP (IN of) (NP (NN daylight)))))) (. .)))
At this latitude winter days are short and summer days have 20 hours of daylight.
(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.