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

Example Input: Sentence: 'there is a stepladder situated over a toilet'. Replace the letter 'r' with 'x' in the sentence.
Example Output: thexe is a stepladdex situated ovex a toilet

Example Input: Sentence: 'a statue of a person holding their arm up in the air'. Replace the letter 'p' with 'h' in the sentence.
Example Output: a statue of a herson holding their arm uh in the air

Example Input: Sentence: 'a elegant sofa and a vase filled with a feathered arrangement'. Replace the letter 'e' with 'b' in the sentence.
Example Output:
a blbgant sofa and a vasb fillbd with a fbathbrbd arrangbmbnt