instruction:
In this task, you need to count the occurrences of the given word in the given sentence.
question:
Sentence: 'a man is looking slyly at the camera while sitting at his laptop at a desk'. Count the occurrences of the word 'at' in the given sentence.
answer:
3


question:
Sentence: 'a man puts his head on his cat sitting on a suitcase'. Count the occurrences of the word 'a' in the given sentence.
answer:
2


question:
Sentence: 'a view of a group of people standing inside  a building with umbrellas'. Count the occurrences of the word 'a' in the given sentence.
answer:

3