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

Example Input: Sentence: 'a person feeding a cow with a bottle'. Count the occurrences of the word 'a' in the given sentence.
Example Output: 3

Example Input: Sentence: 'a man is holding a camera on a rig while skateboarding in a parking lot'. Count the occurrences of the word 'a' in the given sentence.
Example Output: 4

Example Input: Sentence: 'a pair of red scissors sitting on top of a paper'. Count the occurrences of the word 'of' in the given sentence.
Example Output:
2