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

Example Input: Sentence: 'the big sandwich features several different  colorful ingredients'. Replace the letter 'e' with 'o' in the sentence.
Example Output: tho big sandwich foaturos sovoral difforont  colorful ingrodionts

Example Input: Sentence: 'a table with three different plates and several drinks on it'. Replace the letter 't' with 'x' in the sentence.
Example Output: a xable wixh xhree differenx plaxes and several drinks on ix

Example Input: Sentence: 'a plate containing various pink pastries and candies'. Replace the letter 'a' with 'x' in the sentence.
Example Output:
x plxte contxining vxrious pink pxstries xnd cxndies