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: 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.
Example output: Who believes Fagin's gang make wallets and handkerchiefs?.
Example explanation: 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.
Q: Passage: Motivated by a variety of reasons from college tuition support, to a sense of purpose, best friends Dominic and Cole join the Army National Guard after graduating from their rural high school.  After persuading several of their friends to join them, the young men are sent to Afghanistan as part of the 107th Engineer Battalion, 168th Engineer Brigade, where they are tasked with searching for roadside bombs in order to keep roads safe for other troops.  By the time their deployment ends, they are no longer the carefree group of friends they were before enlisting; repeated bombs blasts around their convoys have led to TBI symptoms, and they have become increasingly disillusioned about their mission.
Coming home is no relief as they are now confronted with the silent war wounds of PTSD and TBI. The soldiers struggle with reintegration with society and some miss the simplicity in life they had while in Afghanistan. The latter half of the documentary focuses on their struggles on the home front and how each of them, and their families try to return to normal life.
A:
Who is sent to Afghanistan?