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

Example Input: Sentence: 'a woman is holding a tennis racket on a court'. Count the occurrences of the word 'a' in the given sentence.
Example Output: 3

Example Input: Sentence: 'a bedroom is shown with a rug on the floor'. Count the occurrences of the word 'on' in the given sentence.
Example Output: 1

Example Input: Sentence: 'two sodas four hot dogs and two orders of cheese fries are on a table'. Count the occurrences of the word 'are' in the given sentence.
Example Output:
1