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.

Example Input: Passage: The two main requirements of an anti-torque system are that it should prevent rotation of the sonde, and it should allow easy movement of the drill up and down the borehole.  Attempts have been made to design drills with counter-rotating components so that overall torque is minimized, but these have had limited success.  Five kinds of anti-torque systems have been devised for use with cable-suspended EM drills, though not all are in current use, and some drills have used a combination of more than one design.  The first drill to require an anti-torque system was used at Camp Century by CRREL in 1966; the drill incorporated a set of hinged friction blades that swung out from the sonde when the drill motor was started.  These were found to have very weak friction against the borehole wall, and were ineffective; the drill had to be controlled carefully to prevent twisting the cable.  No other drills have attempted to use this approach.For the next deployment of the drill leaf springs were installed, and this has proved to be a more durable design.  These are mounted vertically, with a curve outwards so that they are easily compressed by the borehole wall, and can slide up and down with the movement of the drill.  They pass easily through any areas of irregularity in the borehole, but the edges of the springs cut into the borehole wall and prevent rotation.  Leaf springs are very simple mechanically, with the additional benefit of being easy to adjust by changing the spacing between the end points.  They can be placed anywhere on the drill that does not rotate, so they do not add length to the sonde.  The shape is usually a fourth-order parabola, since this has been determined to provide the most even loading against the borehole wall.  Leaf springs have been found to be so effective that they can prevent rotation even in heavy drills running at full power.Skate antitorque systems have blades attached to vertical bars which are pushed against the borehole wall; the blades dig into the wall and provide the anti-torque.  Skates can be built with springs which allow them to keep the blades pressed against the wall in an irregular borehole, and to prevent problems in narrower parts of the borehole.  Although skates are a popular design for anti-torque and have been used with success, they have difficulty preventing rotation in firn and at boundaries between layers of different densities, and can cause problems when drilling with high torque.  When they fail, they act as reamers, removing chips from the wall which can fall to the drillbit and interfere with drilling.
Example Output: What acts as reamers when they fail?

Example Input: Passage: A suicidal woman, Lillian Belton, unsuccessfully attempts suicide by taking pills, and she is referred to a psychiatrist for therapy. While at the psychiatrist, Lillian attempts suicide again by trying to jump out the window, and she is only stopped by the psychiatrist, Dr. Mary White. Dr. White learns that Lillian's troubles are connected to Jack Kerry, (Louis Hayward) who she contacted just prior to her attempt with the psychiatrist. Lillian loves Jack, but he is an alcoholic and does not love Lillian the way she loves him. Dr. White contacts Jack, and persuades him to seek treatment for his alcoholism. As Jack completes his treatment, he falls in love with Dr. White, but the Dr. reminds Jack of Lillian's need for him, and Jack and Lillian marry. Lillian's physician, Dr. Gordon Phillips, is also in love with Dr. White, but cannot convince her to leave her patients and her practice. Dr. White encounters Lillian and Jack at a costume ball, and Jack manages to get a dance with Dr. White, as a suspicious Lillian looks on. Jack confesses his love for Dr. White, but she again reminds him of his marriage and commitment to Lillian. An enraged Lillian creates a scene with Dr, White, who uses this experience as a parallel of her and Dr. Phillips' relationship.
Example Output: What is the first name of the person who is referred to a psychiatrist for therapy?

Example Input: Passage: Gambler Nathan Detroit seeks to organize an unlicensed crap game, but the police, led by Lieutenant Brannigan, are "putting on the heat". All the places where Nathan usually holds his games refuse him entry due to Brannigan's intimidating pressure. The Biltmore garage is the only venue where Nathan can hold the game, but its owner requires a $1,000 security deposit, which Nathan doesn't have. Adding to his problems, Nathan's fiancée, Miss Adelaide, a nightclub singer, wants to bring an end to their 14-year engagement and actually tie the knot. She also wants him to go straight, but organizing illegal gambling is the only thing he's good at. 
Then Nathan spots an old acquaintance, Sky Masterson, a gambler willing to bet on virtually anything and for high amounts. To win the $1,000 security deposit, Nathan bets Sky that he can't take a girl of Nathan's choosing to dinner in Havana, Cuba. The bet seems impossible for Sky to win when Nathan nominates Sergeant Sarah Brown, a sister at the Save a Soul Mission, which opposes gambling.
To approach Sarah, Sky pretends that he is a gambler who wants to change. Sky suggests a bargain. He will get a dozen sinners into the Mission for her Thursday night meeting in return for her having dinner with him in Havana. With General Matilda Cartwright threatening to close the Broadway branch for lack of participation, Sarah has little choice left, and agrees to the date.
Example Output:
What's the first name of the person the nightclub singer's fiance set as the target of a bet?