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

Ex Input:
Sentence: 'the tennis player throws her racket in celebration'. Replace the letter 't' with 'l' in the sentence.

Ex Output:
lhe lennis player lhrows her rackel in celebralion


Ex Input:
Sentence: 'a kitchen with a fridge, stove, window, and dining table'. Replace the letter 'd' with 'f' in the sentence.

Ex Output:
a kitchen with a frifge, stove, winfow, anf fining table


Ex Input:
Sentence: 'a black bear walking next to a moss covered rock'. Replace the letter 'b' with 'u' in the sentence.

Ex Output:

a ulack uear walking next to a moss covered rock