instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a man is ordering food from a mobile food truck'. Replace the letter 'r' with 'q' in the sentence.
answer:
a man is oqdeqing food fqom a mobile food tquck


question:
Sentence: 'a small bird perched on some thin branches'. Replace the letter 'a' with 'f' in the sentence.
answer:
f smfll bird perched on some thin brfnches


question:
Sentence: 'there is a boy on a skateboard rolling down a ramp'. Replace the letter 'a' with 'l' in the sentence.
answer:

there is l boy on l skltebolrd rolling down l rlmp