TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'horses drink and graze the field and water'. Replace the letter 'i' with 'c' in the sentence.

SOLUTION: horses drcnk and graze the fceld and water

PROBLEM: Sentence: 'this is a cute dog sticking his head out of the window of a red car'. Replace the letter 'e' with 'z' in the sentence.

SOLUTION: this is a cutz dog sticking his hzad out of thz window of a rzd car

PROBLEM: Sentence: 'a man biting into a nathan's chili cheese hot dog'. Replace the letter 'h' with 'i' in the sentence.

SOLUTION:
a man biting into a natian's ciili cieese iot dog