instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'there is a big room with furniture and items inside'. Replace the letter 'e' with 'k' in the sentence.
answer:
thkrk is a big room with furniturk and itkms insidk


question:
Sentence: 'a large elephant standing outside beside a tree'. Replace the letter 'e' with 'y' in the sentence.
answer:
a largy ylyphant standing outsidy bysidy a tryy


question:
Sentence: 'a man sitting on a bench looking at his cell phone'. Replace the letter 'n' with 'a' in the sentence.
answer:

a maa sittiag oa a beach lookiag at his cell phoae