instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a couch, footrest, tv and other furniture are arranged in a living room'. Replace the letter 'o' with 'g' in the sentence.
answer:
a cguch, fggtrest, tv and gther furniture are arranged in a living rggm


question:
Sentence: 'a skater looks ahead as he rides down a ramp'. Replace the letter 'n' with 'm' in the sentence.
answer:
a skater looks ahead as he rides dowm a ramp


question:
Sentence: 'huge elephant is moving a big log by itself'. Replace the letter 'n' with 'f' in the sentence.
answer:

huge elephaft is movifg a big log by itself