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

[Q]: Sentence: 'a propeller plane that is parked in a hanger'. Count the occurrences of the word 'a' in the given sentence.
[A]: 2


[Q]: Sentence: 'a person flying a kite on a busy city street'. Count the occurrences of the word 'on' in the given sentence.
[A]: 1


[Q]: Sentence: 'a boy in a wet suit and a white and colored surfboard'. Count the occurrences of the word 'a' in the given sentence.
[A]:
3