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

[Q]: Sentence: 'a variety of aerial vehicles in a hangar'. Count the occurrences of the word 'a' in the given sentence.
[A]: 2


[Q]: Sentence: 'a baseball player holding a bat while playing a game'. Count the occurrences of the word 'a' in the given sentence.
[A]: 3


[Q]: Sentence: 'a man holding a glove on a baseball field'. Count the occurrences of the word 'a' in the given sentence.
[A]:
3