In this task, you need to count the occurrences of the given word in the given sentence.

[Q]: Sentence: 'a guy hitting a ball at a professional baseball game'. Count the occurrences of the word 'a' in the given sentence.
[A]: 3


[Q]: Sentence: 'a kitchen with a white refrigerator and a microwave oven'. Count the occurrences of the word 'a' in the given sentence.
[A]: 3


[Q]: Sentence: 'a piece of luggage with a tear and luggage tag'. Count the occurrences of the word 'a' in the given sentence.
[A]:
2