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

Example Input: Sentence: 'a woman cutting cake while another woman is holding a plate'. Count the occurrences of the word 'a' in the given sentence.
Example Output: 2

Example Input: Sentence: 'two adults on skis with a child on skis between them'. Count the occurrences of the word 'on' in the given sentence.
Example Output: 2

Example Input: Sentence: 'a small plain with the word crunch written on the side of it'. Count the occurrences of the word 'the' in the given sentence.
Example Output:
2