In this task, you need to replace a letter in the sentence with another given letter.

Q: Sentence: 'a memorial with various plaques and american flags on it'. Replace the letter 'a' with 'k' in the sentence.

A: k memorikl with vkrious plkques knd kmerickn flkgs on it
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Q: Sentence: 'red helicopter with landing wheels flying in the sky'. Replace the letter 'h' with 'y' in the sentence.

A: red yelicopter wity landing wyeels flying in tye sky
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Q: Sentence: 'a large bird is standing in an open window'. Replace the letter 'a' with 'y' in the sentence.

A:
y lyrge bird is stynding in yn open window
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