instruction:
In this task, you need to count the occurrences of the given word in the given sentence.
question:
Sentence: 'a red stop sign covered in graffiti under a train crossing'. Count the occurrences of the word 'a' in the given sentence.
answer:
2


question:
Sentence: 'several sheet grazing on greens near some mountains'. Count the occurrences of the word 'mountains' in the given sentence.
answer:
1


question:
Sentence: 'some baseball players on a field playing baseball'. Count the occurrences of the word 'playing' in the given sentence.
answer:

1