instruction:
In this task, you need to count the occurrences of the given word in the given sentence.
question:
Sentence: 'a black horse standing on a hill top with a white horse'. Count the occurrences of the word 'a' in the given sentence.
answer:
3


question:
Sentence: 'a traffic signal is lit on the side of a city street'. Count the occurrences of the word 'a' in the given sentence.
answer:
2


question:
Sentence: 'a plane parked in a large airplane hanger'. Count the occurrences of the word 'a' in the given sentence.
answer:

2