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

Example Input: Sentence: 'two cats are walking on wood near a trash can'. Count the occurrences of the word 'are' in the given sentence.
Example Output: 1

Example Input: Sentence: 'blue flowers with green stems next to white flowers in a vase'. Count the occurrences of the word 'flowers' in the given sentence.
Example Output: 2

Example Input: Sentence: 'a person on a court with a tennis racket'. Count the occurrences of the word 'tennis' in the given sentence.
Example Output:
1