In this task, you need to count the occurrences of the given word in the given sentence.

Q: Sentence: 'an employee at a canon store stands in front of a case of canon merchandise'. Count the occurrences of the word 'of' in the given sentence.

A: 2
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Q: Sentence: 'the father and son are looking at the kites flying overhead'. Count the occurrences of the word 'the' in the given sentence.

A: 2
****
Q: Sentence: 'people walking on a sidewalk next to a store while two police cars and a bus drive in the road by them'. Count the occurrences of the word 'a' in the given sentence.

A:
3
****