instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a bunch of signs on a pole on the street'. Replace the letter 'c' with 's' in the sentence.
answer:
a bunsh of signs on a pole on the street


question:
Sentence: 'bananas, oranges and apples are in shades of yellow and orange'. Replace the letter 'r' with 'b' in the sentence.
answer:
bananas, obanges and apples abe in shades of yellow and obange


question:
Sentence: 'a giraffe  is eating something with his long tongue from the young boy's bag'. Replace the letter 'u' with 'w' in the sentence.
answer:

a giraffe  is eating something with his long tongwe from the yowng boy's bag