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

Example Input: Sentence: 'a girl riding a horse is jumping the log'. Replace the letter 'a' with 't' in the sentence.
Example Output: t girl riding t horse is jumping the log

Example Input: Sentence: 'a clean and organized hotel bedroom with tv'. Replace the letter 'w' with 'p' in the sentence.
Example Output: a clean and organized hotel bedroom pith tv

Example Input: Sentence: 'two men dressed up with suit and tie standing in a parking lot'. Replace the letter 'i' with 'g' in the sentence.
Example Output:
two men dressed up wgth sugt and tge standgng gn a parkgng lot