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

Ex Input:
Sentence: 'a person scooping from a large pot of soup on the stove into a soup bowl'. Replace the letter 'a' with 'x' in the sentence.

Ex Output:
x person scooping from x lxrge pot of soup on the stove into x soup bowl


Ex Input:
Sentence: 'the man is skiing fast in the snow'. Replace the letter 'o' with 'x' in the sentence.

Ex Output:
the man is skiing fast in the snxw


Ex Input:
Sentence: 'two giraffes crossing each other as they walk different directions'. Replace the letter 'd' with 'g' in the sentence.

Ex Output:

two giraffes crossing each other as they walk gifferent girections