Input (grade 13): He first meets his uncle, Mississippi riverboater Angus "Pothole" McDuck, and the Beagle Boys, a family of outlaws that remain his enemies for the rest of his life.
Output (grade 10): Scrooge works for his Uncle Angus "Pothole" McDuck and has his first encounter with Blackheart Beagle and his sons, the Beagle Boys.