Given the task definition, example input & output, solve the new input case.
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: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs.
Output: Who believes Fagin's gang make wallets and handkerchiefs?.
This question is based on the following sentence in the passage "He believes they make wallets and handkerchiefs". It evaluates the understanding that the pronoun "he" refers to name "Oliver". You can ask questions like this one about most pronouns in a paragraph.

New input case for you: Passage: The four officers were taken aback by Taylor's searing words and felt they had been humiliated. A decade after the incident, Kỳ described Taylor as "the sort of man who addressed people rather than talked to them", referencing the confrontation. Karnow said "For the sake of their own pride, they [the Vietnamese officers] resented being treated in ways that reminded them of their almost total dependence on an alien power. How could they preserve a sense of sovereignty when Taylor, striving to push them into 'getting things done', behaved like a viceroy?" However, Thi also took a perverse pleasure in riling Taylor. He was seen by a CIA officer soon after, grinning. When asked why he was happy, Thi said "Because this is one of the happiest days of my life ... Today I told the American ambassador that he could not dictate to us." Nevertheless, Taylor's conduct had rankled the officers, stirring their latent sense of nationalism and anti-Americanism; Khánh would exploit this to strengthen his fragile position in the junta.Khánh's quartet of delegates responded to Taylor in a circumlocutory way. They remained calm and did not resort to direct confrontation. Kỳ said the change was necessary, as "the political situation is worse than it ever was under Diệm". Kỳ explained that the situation mandated the dissolution of the council, saying "We know you want stability, but you cannot have stability until you have Unity." He claimed some HNC members were disseminating coup rumors and creating doubt among the population, and that "both military and civilian leaders regard the presence of these people in the High National Council as divisive of the Armed Forces due to their influence". Kỳ further accused some of the HNC members of being communist sympathizers and cowards who wanted to stop the military from strengthening. He promised to explain the decision at a media conference and vowed that he and his colleagues would return to purely military roles in the near future. Thiệu added "I do not see how our action has hurt the Hương government ... Hương now has the full support of the Army and has no worries from the High National Council, which we have eliminated." Cang said "It seems ... we are being treated as though we were guilty. What we did was only for the good of the country."When Taylor said the moves detracted from Hương and Suu's powers, the officers disagreed and said they supported the pair in full and that Hương had approved of the HNC's dissolution. Taylor was unimpressed by the reassurances, concluding with "I don't know whether we will continue to support you after this ... You people have broken a lot of dishes and now we have to see how we can straighten out this mess." Taylor's deputy, U. Alexis Johnson felt the discussion had become counterproductive and was increasing the problem. He suggested that should the generals feel unwilling to alter their position immediately, they should refrain from actions that would preclude a later change of heart. He proposed they merely announce the removal of certain members of the HNC rather than the dissolution of the entire body, hoping the HNC could be reconstituted with figures they deemed to be more satisfactory. The four officers did not give a clear answer to Johnson's idea, indicating they had not made a concrete decision by saying "the door is not closed".
Output:
What was the name of the person who was seen by a CIA officer?