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

Sentence: 'a man is posing in a desert, leaning on a sign with an image of a camel on it'. Replace the letter 'i' with 'r' in the sentence.
a man rs posrng rn a desert, leanrng on a srgn wrth an rmage of a camel on rt

Sentence: 'a man that is throwing a frizbee in the woods'. Replace the letter 'g' with 'u' in the sentence.
a man that is throwinu a frizbee in the woods

Sentence: 'a woman stands on an inflatable yellow boat and oars through some plant debris'. Replace the letter 'a' with 'i' in the sentence.
i womin stinds on in inflitible yellow boit ind oirs through some plint debris