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: Yale grad Dan Brooks is expected to marry wealthy boss J.L. Higgins' (Charles Bickford) daughter Margaret and join the family box-making business. He is far more interested in racing a horse he owns, Broadway Bill.
Doing poorly at work, Dan and his groom Whitey leave town to enter Bill in the Imperial Derby, but first must find money for the entry fee. He and old pal Professor Pettigrew each try to con the other out of a few bucks, then end up singing the Yale school song to get out of a restaurant tab they cannot pay.
Maggie's younger sister Alice is secretly in love with Dan, so she offers him some money, pawning her belongings. Whitey is beaten up trying to win some in a craps game, and Broadway Bill is carted away because Dan does not pay his feed bill. Dan is jailed, too.
A rich man makes a bet on 100-to-1 shot Bill, leading to false rumors that the horse is a shoo-in. The odds drop fast, but gamblers and a crooked jockey try to make sure their own favorites win the race. Broadway Bill somehow manages to win, but collapses at the finish line and suffers a fatal heart attack.
A saddened Dan takes comfort in deciding to buy and race Broadway Bill II. His enthusiasm persuades Alice and even her dad to lend Dan a hand.
Who is Margaret's fathers name?