In this task, you are given a sentence and question which can be answered using the sentence. Your task is to answer the question using the information from the sentence. The answer to the question is unique and it is a continuous text span from the sentence.
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Question: Sentence: When BrdU is integrated into DNA , it is supposed that the bromine deforms the minor groove so that Hoechst dyes can not reach their optimal binding site . 
 Question: what does something deform?

Answer: the minor groove


Question: Sentence: Swinburne relies on his previous arguments as he defends particular Christian beliefs . 
 Question: what does someone defend?

Answer: particular Christian beliefs


Question: Sentence: In the context of a Stryker Brigade Combat Team 's Infantry Rifle Companies , one man from each fireteam in a rifle squad is either the Squad Anti-armor Specialist , armed with the FGM-148 Javelin , or the Squad Designated Marksman , who carries the M4 carbine and M14 rifle . 
 Question: when is someone armed  with something?

Answer:
In the context of a Stryker Brigade Combat Team 's Infantry Rifle Companies