instruction:
In this task, you need to count the occurrences of the given word in the given sentence.
question:
Sentence: 'a man and boy blow out a candle on a birthday cake'. Count the occurrences of the word 'a' in the given sentence.
answer:
3


question:
Sentence: 'several boats parked near the rivers edge letting passengers off'. Count the occurrences of the word 'rivers' in the given sentence.
answer:
1


question:
Sentence: 'a person is riding a bicycle but there is a train in the background'. Count the occurrences of the word 'a' in the given sentence.
answer:

3