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

Ex Input:
Sentence: 'a skier in the midst of a jump'. Replace the letter 'm' with 'd' in the sentence.

Ex Output:
a skier in the didst of a judp


Ex Input:
Sentence: 'little tubs of rice and mixed vegetables for a meal'. Replace the letter 't' with 'z' in the sentence.

Ex Output:
lizzle zubs of rice and mixed vegezables for a meal


Ex Input:
Sentence: 'a herd of black cattle grazing and lounging in a green field'. Replace the letter 'a' with 'q' in the sentence.

Ex Output:

q herd of blqck cqttle grqzing qnd lounging in q green field