TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a fire hydrant and a rolled up fire hose'. Replace the letter 'd' with 's' in the sentence.

SOLUTION: a fire hysrant ans a rolles up fire hose

PROBLEM: Sentence: 'a street side tree is filled with candles, teddy bears and balloons'. Replace the letter 'e' with 'c' in the sentence.

SOLUTION: a strcct sidc trcc is fillcd with candlcs, tcddy bcars and balloons

PROBLEM: Sentence: 'snow boarder mid-air in view of ski lift'. Replace the letter 'o' with 'j' in the sentence.

SOLUTION:
snjw bjarder mid-air in view jf ski lift