instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a family opens gifts in a room with their dog, while sitting on couches'. Replace the letter 's' with 'l' in the sentence.
answer:
a family openl giftl in a room with their dog, while litting on couchel


question:
Sentence: 'a man and a child skiing down a mountain on a trail'. Replace the letter 'n' with 'm' in the sentence.
answer:
a mam amd a child skiimg dowm a moumtaim om a trail


question:
Sentence: 'a couple of yellow beds in a room'. Replace the letter 'f' with 'i' in the sentence.
answer:

a couple oi yellow beds in a room