Complex sentence: On a snowy night in New York City, Jerry is comfortably asleep in his hole inside a penthouse, while Tom tries to keep from freezing to death in the alley below, after being thrown out by his owner.
Split into simpler sentences: On a snowy night in New York City, Jerry is comfortably asleep inside a penthouse. Tom, meanwhile, is freezing in the alley below, after being evicted by his owner.