Given the task definition and input, reply with output. 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: Three men rob a millionaire of diamonds aboard an airliner in flight. When Police Superintendent Benting tries to intervene, Jack Drake, another passenger, knocks him out to save him from being shot. The thieves force the pilot to land so they can dump the passengers. However, the men find the diamonds have already been stolen by someone else (Drake). 
Drake is a sort of modern-day Robin Hood. He donates the proceeds of his latest robbery to fund the stalled construction of the "New Social Institute". He even writes a book, "Crackerjack": The true story of my exploits., which becomes a bestseller. Everybody is reading it, including the people at Scotland Yard and Baroness Von Haltz, and wondering if it is fact or fiction. The baroness tells her maid Annie that certain passages somehow remind her of Drake, who broke her heart. 
By coincidence, she is residing in the same hotel as Drake. He goes to see her, but she does not forgive him for leaving her without a word in Berlin. He explains that he was forced to leave suddenly, but she is not mollified.
Meanwhile, Drake instructs Burdge, his secretary, to send a cheque for £10,000 to the Buckingham Hospital for a new wing, even though Burdge informs him he is overdrawn at the bank. Drake tells him that the wealthy Mrs. Humbold's pearls will provide ample funds. The Humbolds are hosting a masquerade ball that night, and the baroness will be there.
At the ball, part of the entertainment is a group called the "Four Gangsters", who have been tied up and replaced by a gang of real gangsters, the same thieves from the aeroplane caper. Sculpie, their leader, kills an unarmed man who foolishly tries to resist. Afterward, however, Sculpie is furious to learn that the pearls he took from Mrs. Humbold are fakes. Once again, Drake has the real ones.
What is the first name of the person who stole the diamonds?