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

Input: Consider Input: Sentence: 'wine is being poured into a wine glass with a syringe'. Replace the letter 'e' with 'y' in the sentence.

Output: winy is bying pouryd into a winy glass with a syringy

Input: Consider Input: Sentence: 'a man standing on a tennis court holding a tennis racquet'. Replace the letter 'c' with 'y' in the sentence.

Output: a man standing on a tennis yourt holding a tennis rayquet

Input: Consider Input: Sentence: 'some zebras are eating green grass and a hill'. Replace the letter 's' with 'z' in the sentence.
Output: zome zebraz are eating green grazz and a hill