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

Example Input: Sentence: 'a baby is holding and eating a banana'. Replace the letter 'i' with 'g' in the sentence.
Example Output: a baby gs holdgng and eatgng a banana

Example Input: Sentence: 'a woman and man both inspecting their cellphones'. Replace the letter 'e' with 'h' in the sentence.
Example Output: a woman and man both insphcting thhir chllphonhs

Example Input: Sentence: 'a woman and children cooking hot dogs outdoors'. Replace the letter 'o' with 'v' in the sentence.
Example Output:
a wvman and children cvvking hvt dvgs vutdvvrs