Seasons : During the portion of Earth's orbit when axis is tilted, at its constant angle, with the North Pole toward the sun and South Pole away from the sun, the Northern Hemisphere is in summer and the Southern Hemisphere is in winter.
(axis; is tilted; ) (the Northern Hemisphere; is; in summer; T:During the portion of Earth's orbit; T:when axis is tilted, at its constant angle, with the North Pole toward the sun and South Pole away from the sun) Context(the Northern Hemisphere is,List([159, 185))):(the Southern Hemisphere; is; in winter)
the Northern Hemisphere is,List([159, 185))
axis the Northern Hemisphere the Southern Hemisphere
is tilted is is
in summer T:During the portion of Earth's orbit T:when axis is tilted, at its constant angle, with the North Pole toward the sun and South Pole away from the sun
in winter