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

[Q]: Sentence: 'a bucket is sitting on the floor of a bathroom'. Count the occurrences of the word 'a' in the given sentence.
[A]: 2


[Q]: Sentence: 'a computer tore apart by a monitor keyboard and mouse on a desk'. Count the occurrences of the word 'a' in the given sentence.
[A]: 3


[Q]: Sentence: 'a cat sitting near a window looking at a squirrel eating'. Count the occurrences of the word 'a' in the given sentence.
[A]:
3