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

[Q]: Sentence: 'a man with glasses a collar shirt and a tie on'. Count the occurrences of the word 'a' in the given sentence.
[A]: 3


[Q]: Sentence: 'a child laying on a bed with his head hanging up side down and a teddy bear leaning against the bed'. Count the occurrences of the word 'a' in the given sentence.
[A]: 3


[Q]: Sentence: 'a man is riding a white surfboard at the beach'. Count the occurrences of the word 'a' in the given sentence.
[A]:
2