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

[EX Q]: Sentence: 'a woman is petting a small horse in a field'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a dog is sleeping in a bed underneath a desk'. Count the occurrences of the word 'a' in the given sentence.
[EX A]: 3

[EX Q]: Sentence: 'a tennis player in black shorts and white shirt looks up and holds back a red racket'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
2