TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a person standing on some skis going through the snow'. Replace the letter 'o' with 'l' in the sentence.

SOLUTION: a persln standing ln slme skis gling thrlugh the snlw

PROBLEM: Sentence: 'three colorful knit bear toys with button eyes'. Replace the letter 'r' with 'z' in the sentence.

SOLUTION: thzee colozful knit beaz toys with button eyes

PROBLEM: Sentence: 'a black and white image of a bird flying over the lake'. Replace the letter 'e' with 'p' in the sentence.

SOLUTION:
a black and whitp imagp of a bird flying ovpr thp lakp