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

Ex Input:
Sentence: 'a woman sitting in front of a laptop computer'. Replace the letter 'u' with 'o' in the sentence.

Ex Output:
a woman sitting in front of a laptop compoter


Ex Input:
Sentence: 'a group of young adults are engaged in outdoor exercise'. Replace the letter 'g' with 'n' in the sentence.

Ex Output:
a nroup of younn adults are ennaned in outdoor exercise


Ex Input:
Sentence: 'a skateboarder is skating toward a person and some pigeons'. Replace the letter 'e' with 'n' in the sentence.

Ex Output:

a skatnboardnr is skating toward a pnrson and somn pignons