In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'a memorial with various plaques and american flags on it'. Replace the letter 'a' with 'k' in the sentence.

Answer: k memorikl with vkrious plkques knd kmerickn flkgs on it

Question: Sentence: 'a photo of a woman milking a brown cow'. Replace the letter 'k' with 'q' in the sentence.

Answer: a photo of a woman milqing a brown cow

Question: Sentence: 'three snowboarders travel down the side of a snowy hill'. Replace the letter 'n' with 'a' in the sentence.

Answer:
three saowboarders travel dowa the side of a saowy hill