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

Example Input: Sentence: 'a cake, pitcher, bowl and package of frosting sitting on a table'. Replace the letter 't' with 'g' in the sentence.
Example Output: a cake, pigcher, bowl and package of frosging sigging on a gable

Example Input: Sentence: 'a cat with a pink bow sits underneath something silver'. Replace the letter 'h' with 'n' in the sentence.
Example Output: a cat witn a pink bow sits underneatn sometning silver

Example Input: Sentence: 'two men are playing baseball one is a pitcher'. Replace the letter 'a' with 'w' in the sentence.
Example Output:
two men wre plwying bwsebwll one is w pitcher