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

Ex Input:
Sentence: 'a basket holds flowers, twigs, and various fruits'. Replace the letter 'a' with 'g' in the sentence.

Ex Output:
g bgsket holds flowers, twigs, gnd vgrious fruits


Ex Input:
Sentence: 'a giraffe leaning over a fence from inside it's pasture'. Replace the letter 'n' with 'l' in the sentence.

Ex Output:
a giraffe lealilg over a felce from ilside it's pasture


Ex Input:
Sentence: 'calico cat sprawled stealthily in the grass in an alert manner'. Replace the letter 'c' with 'k' in the sentence.

Ex Output:

kaliko kat sprawled stealthily in the grass in an alert manner