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

Example Input: Sentence: 'a group of people sitting around a table with wine glasses and plates'. Count the occurrences of the word 'group' in the given sentence.
Example Output: 1

Example Input: Sentence: 'an over head shot of a young man skateboarding in a skate park'. Count the occurrences of the word 'a' in the given sentence.
Example Output: 2

Example Input: Sentence: 'a person walking in a garden with a bench'. Count the occurrences of the word 'in' in the given sentence.
Example Output:
1