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

[EX Q]: Sentence: 'a big shaggy dog is tied up with its leash next to some stairs outside of a building'. Count the occurrences of the word 'shaggy' in the given sentence.
[EX A]: 1

[EX Q]: Sentence: 'a person taking a photo in a mirror'. Count the occurrences of the word 'person' in the given sentence.
[EX A]: 1

[EX Q]: Sentence: 'a group of people pose together holding their skis in their hands'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
1