instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a couple of giraffe standing next to each other near  a fence'. Replace the letter 'f' with 'j' in the sentence.
answer:
a couple oj girajje standing next to each other near  a jence


question:
Sentence: 'a spacious bedroom with tidy bed and sofa with cushions'. Replace the letter 'n' with 'c' in the sentence.
answer:
a spacious bedroom with tidy bed acd sofa with cushiocs


question:
Sentence: 'traffic congestion with cars and an electric tram'. Replace the letter 'a' with 'k' in the sentence.
answer:

trkffic congestion with ckrs knd kn electric trkm