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

[EX Q]: Sentence: 'a small dog wearing a bright red bow tie as a collar'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a white dog with a black eye laying on a blanket'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a group of people riding a horse wagon down a road'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
3