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

Input: Consider Input: Sentence: 'an umbrella sitting on top of a hill next to a body of water'. Replace the letter 't' with 'b' in the sentence.

Output: an umbrella sibbing on bop of a hill nexb bo a body of waber

Input: Consider Input: Sentence: 'a boy is sitting at a dinner table with his food'. Replace the letter 't' with 'r' in the sentence.

Output: a boy is sirring ar a dinner rable wirh his food

Input: Consider Input: Sentence: 'a women on her knees on a surfboard riding a wave'. Replace the letter 'i' with 'c' in the sentence.
Output: a women on her knees on a surfboard rcdcng a wave