instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a man walking his dog near a sandy area'. Replace the letter 'i' with 'g' in the sentence.
answer:
a man walkgng hgs dog near a sandy area


question:
Sentence: 'a horse in a country field with woods in the background'. Replace the letter 'a' with 'i' in the sentence.
answer:
i horse in i country field with woods in the bickground


question:
Sentence: 'a man swinging a tennis racket at the tennis court'. Replace the letter 't' with 's' in the sentence.
answer:

a man swinging a sennis rackes as she sennis cours