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

Ex Input:
Sentence: 'a hipster riding a skateboard up the side of a wall'. Replace the letter 's' with 'm' in the sentence.

Ex Output:
a hipmter riding a mkateboard up the mide of a wall


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: 'sleeping cat on couch holding a television remote'. Replace the letter 'l' with 'g' in the sentence.

Ex Output:

sgeeping cat on couch hogding a tegevision remote