Complex sentence: In 1971, on a visit to his institutionalized grandfather who warned 5-year-old Billy Chapman that Santa Claus punishes the naughty, Billy's family happens to come across a man dressed in a Santa Claus outfit seemingly having car trouble.
Split into simpler sentences: In 1971, on a visit to his institutionalized grandfather who warned 5-year-old Billy Chapman that Santa Claus punishes the naughty. That night Billy's family happens to come across a man dressed in a Santa Claus outfit seemingly having car trouble.