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

[EX Q]: Sentence: 'a couple giraffes walking through a fielded area'. Replace the letter 'e' with 'c' in the sentence.
[EX A]: a couplc giraffcs walking through a ficldcd arca

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

[EX Q]: Sentence: 'a train that is driving by on the train tracks'. Replace the letter 'h' with 'd' in the sentence.
[EX A]:
a train tdat is driving by on tde train tracks