instruction:
In this task, you need to count the occurrences of the given word in the given sentence.
question:
Sentence: 'a person on a surfboard riding a wave on the ocean'. Count the occurrences of the word 'a' in the given sentence.
answer:
3

question:
Sentence: 'a man sitting at a table holding a glass of wine'. Count the occurrences of the word 'a' in the given sentence.
answer:
3

question:
Sentence: 'a man flying through the air while riding a pair of skis'. Count the occurrences of the word 'a' in the given sentence.
answer:
2