Detailed Instructions: In this task, you need to replace a letter in the sentence with another given letter.
Problem:Sentence: 'a man wearing glasses and a suit standing in front of a podium with a sign for the center for american progress'. Replace the letter 'f' with 'v' in the sentence.
Solution:
a man wearing glasses and a suit standing in vront ov a podium with a sign vor the center vor american progress