In this task, you need to replace a letter in the sentence with another given letter.

Sentence: 'a suitcase is sitting on a sidewalk near trees'. Replace the letter 's' with 'd' in the sentence.
a duitcade id ditting on a didewalk near treed

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.
niraffe standinn on a pile of rocks reachinn up to a branch with its mouth

Sentence: 'a small orange and white airplane is flying in the sky'. Replace the letter 'i' with 'c' in the sentence.
a small orange and whcte acrplane cs flycng cn the sky