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

[Q]: Sentence: 'a herd of zebra grazing in a lush green field'. Replace the letter 'h' with 'j' in the sentence.
[A]: a jerd of zebra grazing in a lusj green field


[Q]: Sentence: 'a tennis racket is sitting in the middle of a tennis field'. Replace the letter 'i' with 'f' in the sentence.
[A]: a tennfs racket fs sfttfng fn the mfddle of a tennfs ffeld


[Q]: Sentence: 'a white horse stands on a grassy hill'. Replace the letter 'a' with 'u' in the sentence.
[A]:
u white horse stunds on u grussy hill