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

[EX Q]: Sentence: 'the cargo train is headed to the next destination'. Replace the letter 'h' with 'x' in the sentence.
[EX A]: txe cargo train is xeaded to txe next destination

[EX Q]: Sentence: 'a young boy riding his skateboard down the sidewalk'. Replace the letter 'd' with 'p' in the sentence.
[EX A]: a young boy riping his skateboarp pown the sipewalk

[EX Q]: Sentence: 'a woman on a cell phone on  city street'. Replace the letter 'e' with 'a' in the sentence.
[EX A]:
a woman on a call phona on  city straat