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

Input: Consider Input: Sentence: 'a room with a bed, lamps, tables and pillows'. Replace the letter 's' with 'b' in the sentence.

Output: a room with a bed, lampb, tableb and pillowb


Input: Consider Input: Sentence: 'commuter trains on tracks next to paved platform'. Replace the letter 'm' with 'w' in the sentence.

Output: cowwuter trains on tracks next to paved platforw


Input: Consider Input: Sentence: 'a container filled with fruits and vegetables on top of a table'. Replace the letter 'f' with 'c' in the sentence.


Output: a container cilled with cruits and vegetables on top oc a table