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

Input: Consider Input: Sentence: 'three colorful knit bear toys with button eyes'. Replace the letter 'r' with 'z' in the sentence.

Output: thzee colozful knit beaz toys with button eyes

Input: Consider Input: Sentence: 'a wooden table topped with lots of sandwiches'. Replace the letter 's' with 'd' in the sentence.

Output: a wooden table topped with lotd of dandwiched

Input: Consider Input: Sentence: 'a few bikes and a motorcycle are parked outside'. Replace the letter 'a' with 'm' in the sentence.
Output: m few bikes mnd m motorcycle mre pmrked outside