TASK DEFINITION: In this task, you need to count the occurrences of the given word in the given sentence.
PROBLEM: Sentence: 'a man tilts into the air on a wheeled device connected to a parachute'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a crowd of people standing next to a bus'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a keyboard on a desk beneath a monitor'. Count the occurrences of the word 'a' in the given sentence.

SOLUTION:
3