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

Ex Input:
Sentence: 'someone playing frisbee with a dog in the middle of a court'. Replace the letter 'd' with 'r' in the sentence.

Ex Output:
someone playing frisbee with a rog in the mirrle of a court


Ex Input:
Sentence: 'a group of people play a video game in a living room'. Replace the letter 'p' with 'u' in the sentence.

Ex Output:
a grouu of ueoule ulay a video game in a living room


Ex Input:
Sentence: 'a painting of a family of brown teddy bears and a kitten'. Replace the letter 'i' with 'u' in the sentence.

Ex Output:

a pauntung of a famuly of brown teddy bears and a kutten