Task: Question Generation
Input (English): Passage: Young bachelors and best friends Fred Flintstone and Barney Rubble have recently qualified as crane operators at Slate & Company. Soon to be employed, now they want dates, and a little green alien The Great Gazoo, exiled to Earth by his species, offers to help, although only they can see him. Meanwhile, Wilma Slaghoople wants a normal life and activities, like bowling, despite her controlling mother Pearl, who wants her to marry smooth casino-owner Chip Rockefeller. Wilma angrily runs away to Bronto King in Bedrock. Waitress Betty O'Shale mistakes her as "caveless", and offers to share her apartment, and gets her a job.
Fred and Barney are smitten with the waitresses and invite them to a carnival, with Fred dating Betty and Barney taking Wilma. Fred wins a carnival game and gets a prize of an egg which hatches into a baby dinosaur, which he names "Dino". However, he does not really feel a connection with Betty, nor does Barney with Wilma, until both men switch dates. Wilma invites her new friends home to a birthday party for her father, Colonel Slaghoople, where all are shocked by her wealth. Fred intends to propose, but changes his mind after meeting Chip, who berates him for his low-level job at Slate & Company. Pearl dislikes the three new friends, but the Colonel accepts them, glad Wilma is happy, and privately gives her a valuable pearl necklace that once belonged to his great-grandmother. After the boys disgrace themselves at dinner, Wilma nevertheless proclaims her pride and follows them out.
Output (English): What is the last name of the character that Mr. Rubble dates first?