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

Example Input: Sentence: 'a small pizza being cut with a pizza cutter'. Count the occurrences of the word 'pizza' in the given sentence.
Example Output: 2

Example Input: Sentence: 'a stuffed animal sits in front of a sheet'. Count the occurrences of the word 'a' in the given sentence.
Example Output: 2

Example Input: Sentence: 'a home office features full bookcase a laptop and a red leather chair'. Count the occurrences of the word 'a' in the given sentence.
Example Output:
3