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

Input: Consider Input: Sentence: 'a baseball player is throwing a ball across the dirt field'. Replace the letter 'a' with 't' in the sentence.

Output: t btsebtll pltyer is throwing t btll tcross the dirt field

Input: Consider Input: Sentence: 'a tower type building structure with a large clock and many windows in front of a cloudy blue sky'. Replace the letter 'n' with 'x' in the sentence.

Output: a tower type buildixg structure with a large clock axd maxy wixdows ix froxt of a cloudy blue sky

Input: Consider Input: Sentence: 'people standing in an arched doorway with umbrellas'. Replace the letter 'p' with 'b' in the sentence.
Output: beoble standing in an arched doorway with umbrellas