In this task, you need to replace a letter in the sentence with another given letter.

[EX Q]: Sentence: 'a boy riding his skate board on an obstacle course'. Replace the letter 'e' with 'b' in the sentence.
[EX A]: a boy riding his skatb board on an obstaclb coursb

[EX Q]: Sentence: 'a person under an open umbrella in the sand'. Replace the letter 'd' with 'h' in the sentence.
[EX A]: a person unher an open umbrella in the sanh

[EX Q]: Sentence: 'a man sitting down holding a piece of red luggage'. Replace the letter 'n' with 'g' in the sentence.
[EX A]:
a mag sittigg dowg holdigg a piece of red luggage