Detailed Instructions: In this task, you need to replace a letter in the sentence with another given letter.
See one example below:
Problem: Sentence: 'group of motorcycle motorists trying to merge into traffic'. Replace the letter 'o' with 'n' in the sentence.
Solution: grnup nf mntnrcycle mntnrists trying tn merge intn traffic
Explanation: The letter 'o' has been replaced in the letter 'n'.

Problem: Sentence: 'a person in a kitchen standing with some food'. Replace the letter 'o' with 'x' in the sentence.
Solution:
a persxn in a kitchen standing with sxme fxxd