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

Ex Input:
Sentence: 'the two zebras standing out in the field'. Replace the letter 'h' with 'i' in the sentence.

Ex Output:
tie two zebras standing out in tie field


Ex Input:
Sentence: 'commuter trains on tracks next to paved platform'. Replace the letter 'm' with 'w' in the sentence.

Ex Output:
cowwuter trains on tracks next to paved platforw


Ex Input:
Sentence: 'the girl is  hugging a white bear and holding something else'. Replace the letter 'g' with 'f' in the sentence.

Ex Output:

the firl is  huffinf a white bear and holdinf somethinf else