instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a large orange cat sits in a chair outside'. Replace the letter 'e' with 'x' in the sentence.
answer:
a largx orangx cat sits in a chair outsidx


question:
Sentence: 'a boy riding his skate board on an obstacle course'. Replace the letter 'e' with 'b' in the sentence.
answer:
a boy riding his skatb board on an obstaclb coursb


question:
Sentence: 'a white broken toilet on the side of the street'. Replace the letter 'k' with 'q' in the sentence.
answer:

a white broqen toilet on the side of the street