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

[Q]: Sentence: 'a home computer setup with two laptops on a desk'. Count the occurrences of the word 'a' in the given sentence.
[A]: 2


[Q]: Sentence: 'a little kid skiing down a hill holding ski poles'. Count the occurrences of the word 'a' in the given sentence.
[A]: 2


[Q]: Sentence: 'a pair of zebras standing in an enclosure by a large rock and in front of a rock wall'. Count the occurrences of the word 'a' in the given sentence.
[A]:
3