TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a white bathroom with a stand alone sink and a shower curtain'. Replace the letter 'a' with 'm' in the sentence.

SOLUTION: m white bmthroom with m stmnd mlone sink mnd m shower curtmin

PROBLEM: Sentence: 'a pile of chopped up broccoli sits next to bottles of sauces'. Replace the letter 't' with 'y' in the sentence.

SOLUTION: a pile of chopped up broccoli siys nexy yo boyyles of sauces

PROBLEM: Sentence: 'a group of elephants walking across a grass covered field'. Replace the letter 'a' with 'g' in the sentence.

SOLUTION:
g group of elephgnts wglking gcross g grgss covered field