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.
--------
Question: Passage: As a result of the Berlin Conference of 1884-1885, the Congo Basin is claimed by King Leopold II of the Belgians, who rules the Congo Free State in personal union with the Kingdom of Belgium. The country is on the verge of bankruptcy, Leopold having borrowed huge sums of money to finance the construction of railways and other infrastructure projects. He sends his envoy Leon Rom to secure the fabled diamonds of Opar. Rom's expedition is ambushed and massacred. A tribal leader, Chief Mbonga, offers Rom the diamonds in exchange for an old enemy: Tarzan.
The man once called "Tarzan", John Clayton III, has left Africa behind and settled down in London with his American-born wife, Jane Porter. He took up his birth name and ancestral family residence as Lord Greystoke. In the eight years since returning from Africa, John's story as Tarzan has become legendary among the Victorian public, although John wants to leave that past behind. Through the British Prime Minister, John is invited by King Leopold to visit Boma and report on the development of the Congo by Belgium; he declines to participate in the perceived publicity stunt.

Answer: What is the first name of the person who sends his envoy to secure diamonds?

Question: Passage: Bud Doyle is a jockey who has discovered the secret to get his favorite mount, Six-Shooter, to boost his performance. If he simply chants the phrase, "Whoop-te-doo", the horse responds with a burst of speed. There is a special bond between the jockey and his mount, but there is increasing tension between Doyle and the horse's owner, Pop Blake (who also raised Doyle), over Doyle's relationship with local singer Babe Ellis. Blake sees Ellis as a distraction prior to the upcoming big race, the Camden Stakes.
The owner of the club where Babe sings, Wally Weber, has his eyes on his horse winning the Camden Stakes. When the issues between Pop and Doyle come to a head, Pop tells Doyle that he has to choose: either he stops seeing Babe, or he'll be replaced as Six-Shooter's jockey in the big race. Angry and frustrated, Doyle quits. Weber approaches him to become the jockey for Rose Dawn, Weber's horse, and Doyle agrees, with the precondition that he not ride Royal Dawn in the Camden Stakes, for he wants Six-Shooter to still win the race. Weber accedes to that one precondition, however, on the day of the race, he makes it clear that Doyle is under contract, and that he will ride Rose Dawn in the race.
Upset, Doyle has no choice but to ride Rose Dawn. However, during the race, he manages to chant his signature "Whoop-te-doo" to Six-Shooter, causing his old mount to win the race. Furious that his horse lost, Weber goes to the judges, who rule that Doyle threw the race, pulling back on Rose Dawn, to allow Six-Shooter to win, and suspend Doyle from horse-racing.

Answer: Which horse does Bud Doyle hope wins the Camden Stakes?

Question: Passage: Irene Morrison, a working class mother of two boys, lives in Upstate New York and works as a supermarket cashier. She also harbors a cocaine addiction. Her eldest son, Ben, whose birthday is approaching, asks Irene to buy a snake for him; she suggests Lego instead. On the night of Halloween, Irene takes her kids trick-or-treating and, at one of the houses they visit, she meets Bob, a nurse.
Later that night, her husband Steve arrives home with a toilet, announcing he's going to build them a second bathroom. In bed, Steve tries to initiate sex, but Irene says she doesn't feel very sexy. She changes the subject back to decorating their bathroom. The next day, Irene takes the kids to a reptile store to buy a snake, but finds that they don't have enough money for one. While her boys wait in the car, Irene visits her dealer, asking him for another fix, but he refuses since she hasn't been paying for the last couple of weeks.
At work, Irene contemplates taking money from the cash register. She then goes back to her dealer with Ben's birthday check from her mother-in-law, but the dealer refuses to take it. Afterwards, Irene checks herself into a drug rehabilitation center. At a meeting about cravings, she meets fellow addict Lucy, and befriends her. While at the facility, Irene again encounters Bob. Before she leaves, Bob visits with a book that helped him during his quitting phase, and offers her his support.

Answer:
What has Ben's mother been not been paying for?