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

Ex Input:
Sentence: 'the airplane is parked on the runway for people to look at'. Replace the letter 'a' with 'e' in the sentence.

Ex Output:
the eirplene is perked on the runwey for people to look et

Ex Input:
Sentence: 'a woman and man both inspecting their cellphones'. Replace the letter 'e' with 'h' in the sentence.

Ex Output:
a woman and man both insphcting thhir chllphonhs

Ex Input:
Sentence: 'a woman walks through a crowd in china'. Replace the letter 'h' with 'q' in the sentence.

Ex Output:
a woman walks tqrougq a crowd in cqina