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

[EX Q]: Sentence: 'a group of kids swimming in ocean around a man on a surfboard'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[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 baseball player attempting to dodge a baseball at a game'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
3