Q: 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: While Clark Kent and Lois Lane are kept under house arrest as prisoners of war in Japan, Superman becomes a saboteur.
In the Japanese City of Yokohama the Eleventh Hour strikes and a ship is turned over. Superman escapes searchlights while sirens go off and goes through a window, putting a barred grille back in place. Lois asks if Clark is awake, to which he asks who could sleep through a racket like this. Lois says the racket has been happening every night since they have been interned. Clark says it may be sabotage, which Lois also hopes. She wonders if Superman is responsible. A guard tells them to stop talking.
A Japanese Official says the sabotage must stop at once. As the Eleventh Hour strikes, Clark looks at his watch and leaves the window, returning as Superman. He leaves the room by removing the grille and drags a ship over into the sea. Sabotage happens every night at the Eleventh Hour, and the Official again says the sabotage still must be stopped. Lois sees Superman as he leaps between buildings. She says outside Clark's room that it is Superman, she just saw him, and the Japanese have a 'swell chance' of catching him. However a guard covers her mouth from behind and drags her out. Notices are put up saying 'Warning! Superman One more act of Sabotage and the American Girl Reporter will be executed at once'.
Superman sends another ship into the sea, but is buried under steel girders. Lois is taken out for execution with her hands tied. As Superman digs himself out she walks against the wall and is blindfolded. Superman sees the notice and is fired on, but leaps away. He shields Lois just as the bullets are fired, and leaps away with her. On a ship landing in America Lois is interviewed. She is asked by a reporter if Clark got away, but says he is still over there but Superman promised to look after him. As the Eleventh Hour strikes in Japan there is another explosion.
A:
What are the first names of the people that the guard tells to stop talking?