instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a man stands in front of a plane on a take off strip'. Replace the letter 'n' with 'o' in the sentence.
answer:
a mao staods io froot of a plaoe oo a take off strip

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: 'several cows laying down in a grassy field'. Replace the letter 'a' with 'm' in the sentence.
answer:
severml cows lmying down in m grmssy field