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 skateboarder sits with his feet on his board'. Replace the letter 'a' with 'q' in the sentence.
Solution:
q skqteboqrder sits with his feet on his boqrd