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

Q: Sentence: 'a boy riding his skate board on an obstacle course'. Replace the letter 'e' with 'b' in the sentence.

A: a boy riding his skatb board on an obstaclb coursb
****
Q: Sentence: 'a photo of a woman milking a brown cow'. Replace the letter 'k' with 'q' in the sentence.

A: a photo of a woman milqing a brown cow
****
Q: Sentence: 'a horse drawn cart passing several parked tractors'. Replace the letter 'r' with 'q' in the sentence.

A:
a hoqse dqawn caqt passing seveqal paqked tqactoqs
****