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

[EX Q]: Sentence: 'a gray and black spotted and striped cat wearing a vest and climbing in a vehicle'. Count the occurrences of the word 'cat' in the given sentence.
[EX A]: 1

[EX Q]: Sentence: 'a cake with chocolate frosting and a cake with white frosting are each in an open box'. Count the occurrences of the word 'frosting' in the given sentence.
[EX A]: 2

[EX Q]: Sentence: 'a tabby cat stretches out sleepily next to a laptop computer'. Count the occurrences of the word 'a' in the given sentence.
[EX A]:
2