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

[EX Q]: Sentence: 'a child in a blue helmet standing on a skateboard indoors'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a group of people sitting around a dinner table'. Count the occurrences of the word 'people' in the given sentence.
[EX A]: 1

[EX Q]: Sentence: 'a woman riding a biek down a sidewalk'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
3