TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a clock mounted above a door entrance with windows'. Replace the letter 's' with 'l' in the sentence.

SOLUTION: a clock mounted above a door entrance with windowl

PROBLEM: Sentence: 'a man is standing at the base ball triangle with bat in tow'. Replace the letter 'n' with 'c' in the sentence.

SOLUTION: a mac is stacdicg at the base ball triacgle with bat ic tow

PROBLEM: Sentence: 'a blue seat in the back of a bus with a painted above it'. Replace the letter 'h' with 't' in the sentence.

SOLUTION:
a blue seat in tte back of a bus witt a painted above it