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

Ex Input:
Sentence: 'the big sandwich features several different colorful ingredients'. Replace the letter 'e' with 'o' in the sentence.

Ex Output:
tho big sandwich foaturos sovoral difforont colorful ingrodionts

Ex Input:
Sentence: 'a fire hydrant with a message painted on it'. Replace the letter 'n' with 'j' in the sentence.

Ex Output:
a fire hydrajt with a message paijted oj it

Ex Input:
Sentence: 'a man jumping up to hit a tennis ball'. Replace the letter 't' with 'b' in the sentence.

Ex Output:
a man jumping up bo hib a bennis ball