instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'giraffe standing on a pile of rocks reaching up to a branch with its mouth'. Replace the letter 'g' with 'n' in the sentence.
answer:
niraffe standinn on a pile of rocks reachinn up to a branch with its mouth


question:
Sentence: 'a white plate topped with a cut in half sandwich'. Replace the letter 'o' with 'x' in the sentence.
answer:
a white plate txpped with a cut in half sandwich


question:
Sentence: 'a stop sign on the side of a quiet street across from a house'. Replace the letter 'a' with 'd' in the sentence.
answer:

d stop sign on the side of d quiet street dcross from d house