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

[EX Q]: Sentence: 'a giraffe sticks its tongue out in the air'. Replace the letter 'e' with 'l' in the sentence.
[EX A]: a giraffl sticks its tongul out in thl air

[EX Q]: Sentence: 'three young school girls waiting on a subway train platform'. Replace the letter 't' with 'o' in the sentence.
[EX A]: ohree young school girls waioing on a subway orain plaoform

[EX Q]: Sentence: 'a person standing behind a counter at a doughnut shop'. Replace the letter 'a' with 'z' in the sentence.
[EX A]:
z person stznding behind z counter zt z doughnut shop