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

[Q]: Sentence: 'a man riding a long surfboard on a wave'. Count the occurrences of the word 'a' in the given sentence.
[A]: 3


[Q]: Sentence: 'a long counter in a shop with several bike tires hanging from the ceiling'. Count the occurrences of the word 'a' in the given sentence.
[A]: 2


[Q]: Sentence: 'a double deckered bus on a narrow road'. Count the occurrences of the word 'a' in the given sentence.
[A]:
2