TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a kid is sitting on a skateboard outside'. Replace the letter 'd' with 'a' in the sentence.

SOLUTION: a kia is sitting on a skateboara outsiae

PROBLEM: Sentence: 'the color theme in this kitchen is red and black'. Replace the letter 't' with 'v' in the sentence.

SOLUTION: vhe color vheme in vhis kivchen is red and black

PROBLEM: Sentence: 'a train engineer preparing the engine of this train for travel'. Replace the letter 'p' with 'u' in the sentence.

SOLUTION:
a train engineer ureuaring the engine of this train for travel