instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'the bus is trying to navigate though the london traffic'. Replace the letter 'a' with 'l' in the sentence.
answer:
the bus is trying to nlviglte though the london trlffic


question:
Sentence: 'a dog with his tongue out riding on a skateboard'. Replace the letter 's' with 'b' in the sentence.
answer:
a dog with hib tongue out riding on a bkateboard


question:
Sentence: 'a pair of people playing tennis on a court'. Replace the letter 'a' with 's' in the sentence.
answer:

s psir of people plsying tennis on s court