TASK DEFINITION: In this task, you need to count the occurrences of the given word in the given sentence.
PROBLEM: Sentence: 'a man holding a frisbee in front of a teen boy with his arms up in the air'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a full view of a building that has a huge roof on top'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 3

PROBLEM: Sentence: 'man in a life jacket water skiing behind a boat'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION:
2