instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a back pack and lap top sit on the kitchen counter'. Replace the letter 't' with 'k' in the sentence.
answer:
a back pack and lap kop sik on khe kikchen counker


question:
Sentence: 'the airplane is parked on the runway for people to look at'. Replace the letter 'a' with 'e' in the sentence.
answer:
the eirplene is perked on the runwey for people to look et


question:
Sentence: 'a couple of giraffe standing next to each other'. Replace the letter 't' with 'i' in the sentence.
answer:

a couple of giraffe sianding nexi io each oiher