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

[Q]: Sentence: 'a woman standing in front of a bear in an enclosure'. Replace the letter 'e' with 'r' in the sentence.
[A]: a woman standing in front of a brar in an rnclosurr

[Q]: Sentence: 'busy city street with pedestrians and cars with lights all around'. Replace the letter 'r' with 'k' in the sentence.
[A]: busy city stkeet with pedestkians and caks with lights all akound

[Q]: Sentence: 'a large train that is on a track near a road'. Replace the letter 'a' with 'g' in the sentence.
[A]:
g lgrge trgin thgt is on g trgck negr g rogd