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

Ex Input:
Sentence: 'the two boys are eating large carrots while sitting on a blanket'. Replace the letter 'a' with 'q' in the sentence.

Ex Output:
the two boys qre eqting lqrge cqrrots while sitting on q blqnket

Ex Input:
Sentence: 'a man on a horse in riding gear looking onward'. Replace the letter 'o' with 'h' in the sentence.

Ex Output:
a man hn a hhrse in riding gear lhhking hnward

Ex Input:
Sentence: 'a person on beach with people windsurfing in the background'. Replace the letter 'g' with 'v' in the sentence.

Ex Output:
a person on beach with people windsurfinv in the backvround