TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a waterview with multiple boats in the water'. Replace the letter 'r' with 'w' in the sentence.

SOLUTION: a watewview with multiple boats in the watew

PROBLEM: Sentence: 'four people are playing an interesting game in the park'. Replace the letter 'e' with 'x' in the sentence.

SOLUTION: four pxoplx arx playing an intxrxsting gamx in thx park

PROBLEM: Sentence: 'a lamb that is laying down in the grass'. Replace the letter 'm' with 'k' in the sentence.

SOLUTION:
a lakb that is laying down in the grass