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

Ex Input:
Sentence: 'a group of small children sitting at a table in front of a pizza'. Replace the letter 'r' with 'd' in the sentence.

Ex Output:
a gdoup of small childden sitting at a table in fdont of a pizza


Ex Input:
Sentence: 'a man is posing in a desert, leaning on a sign with an image of a camel on it'. Replace the letter 'i' with 'r' in the sentence.

Ex Output:
a man rs posrng rn a desert, leanrng on a srgn wrth an rmage of a camel on rt


Ex Input:
Sentence: 'a young boy holds a soccer ball as he stands on the field'. Replace the letter 'e' with 'g' in the sentence.

Ex Output:

a young boy holds a soccgr ball as hg stands on thg figld