TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a boy riding his skate board on an obstacle course'. Replace the letter 'e' with 'b' in the sentence.

SOLUTION: a boy riding his skatb board on an obstaclb coursb

PROBLEM: Sentence: 'the entree on the long plate is in the middle of the wooden table'. Replace the letter 'h' with 'z' in the sentence.

SOLUTION: tze entree on tze long plate is in tze middle of tze wooden table

PROBLEM: Sentence: 'a passenger train is pulled into the station and accepting passengers'. Replace the letter 'c' with 'b' in the sentence.

SOLUTION:
a passenger train is pulled into the station and abbepting passengers