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

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

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


Ex Input:
Sentence: 'children practicing tee ball together with a male coach standing behind the hitter and a tennis court in the background'. Replace the letter 'd' with 'f' in the sentence.

Ex Output:
chilfren practicing tee ball together with a male coach stanfing behinf the hitter anf a tennis court in the backgrounf


Ex Input:
Sentence: 'a large black bird sits atop a tree'. Replace the letter 'a' with 'd' in the sentence.

Ex Output:

d ldrge bldck bird sits dtop d tree