In this task, you need to replace a letter in the sentence with another given letter.

[EX Q]: Sentence: 'a dog laying in front of a horses stall with the horse peeking over the half door'. Replace the letter 'a' with 'b' in the sentence.
[EX A]: b dog lbying in front of b horses stbll with the horse peeking over the hblf door

[EX Q]: Sentence: 'a back pack and lap top sit on the kitchen counter'. Replace the letter 't' with 'k' in the sentence.
[EX A]: a back pack and lap kop sik on khe kikchen counker

[EX Q]: Sentence: 'a room of olden days with a fireplace with wood and and candlestand'. Replace the letter 'a' with 'o' in the sentence.
[EX A]:
o room of olden doys with o fireploce with wood ond ond condlestond