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

Ex Input:
Sentence: 'a cat that is laying down on a bed'. Count the occurrences of the word 'is' in the given sentence.

Ex Output:
1

Ex Input:
Sentence: 'a orange cat sleeping on top of a blanket'. Count the occurrences of the word 'blanket' in the given sentence.

Ex Output:
1

Ex Input:
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 Output:
1