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

Ex Input:
Sentence: 'a ski slope consisting of several people wearing skis and snowboards'. Replace the letter 'e' with 's' in the sentence.

Ex Output:
a ski slops consisting of ssvsral psopls wsaring skis and snowboards


Ex Input:
Sentence: 'a man walking his dog near a sandy area'. Replace the letter 'i' with 'g' in the sentence.

Ex Output:
a man walkgng hgs dog near a sandy area


Ex Input:
Sentence: 'a red stop signed has been altered to say stop hate'. Replace the letter 'e' with 't' in the sentence.

Ex Output:

a rtd stop signtd has bttn alttrtd to say stop hatt