You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs.
Solution: Who believes Fagin's gang make wallets and handkerchiefs?.
Why? This question is based on the following sentence in the passage "He believes they make wallets and handkerchiefs". It evaluates the understanding that the pronoun "he" refers to name "Oliver". You can ask questions like this one about most pronouns in a paragraph.

New input: Passage: Bob Webster, aka Bat Williams, is a career criminal who keeps his parents and siblings in the dark about his chosen career by pretending to be an engineer who is often away in different parts of the world on assignments. He uses this ploy not only to disguise when he is out of town engaged in criminal activities, but also to cover the times he has been sentenced to prison. After receiving a parole from prison, he rejoins his gang, including his gangster girlfriend, Grace Forbes in robbing a creamery. A robbery during which they kill a clerk who can identify them.
After the robbery, Williams leaves the gang and returns to his family's home in upstate New York. His father, John, his mother, Helen, and his sister, Mildred, all think the world of Williams. During his stints in prison, he sends one of the other gang members to different far-away locales, in order to mail a post card to his family, pretending that he is working there on an engineering job. During his visit, he overhears his father on the phone with the Governor, who is asking John to serve on the state parole board. Fearing discovery, Williams tries to convince his father not to serve on the board, but John won't commit one way or the other. While in his home town of Barlow, he also runs into his old girlfriend, Letty Graves. To impress Letty, Williams breaks into a jewelry store and steals a bracelet, but kills the security guard so that he can't identify him.
Solution:
What is Bob Webster's fathers name?