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

Example Input: Sentence: 'teo women in all white playing tennis on a tennis court'. Count the occurrences of the word 'tennis' in the given sentence.
Example Output: 2

Example Input: Sentence: 'a man in a suit pinstriped shirt and red tie'. Count the occurrences of the word 'a' in the given sentence.
Example Output: 2

Example Input: Sentence: 'a person walking past a bunch of red neck ties'. Count the occurrences of the word 'a' in the given sentence.
Example Output:
2