instruction:
In this task, you need to count the occurrences of the given word in the given sentence.
question:
Sentence: 'a couple of horses standing on a  grass covered field'. Count the occurrences of the word 'on' in the given sentence.
answer:
1


question:
Sentence: 'a woman on a tennis court playing tennis with a racket'. Count the occurrences of the word 'a' in the given sentence.
answer:
3


question:
Sentence: 'a man getting ready to step up to bat during a baseball game'. Count the occurrences of the word 'a' in the given sentence.
answer:

2