instruction:
In this task, you need to count the occurrences of the given word in the given sentence.
question:
Sentence: 'a small cat is sitting on a step by a door'. Count the occurrences of the word 'a' in the given sentence.
answer:
3

question:
Sentence: 'a surfer wearing a green shirt holds his surf board and looks out at the boats in the ocean'. Count the occurrences of the word 'a' in the given sentence.
answer:
2

question:
Sentence: 'a scene of a person in a baseball game'. Count the occurrences of the word 'a' in the given sentence.
answer:
3