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

Example Input: Sentence: 'a living area with couch laptop desk and rug'. Count the occurrences of the word 'area' in the given sentence.
Example Output: 1

Example Input: Sentence: 'a girl riding a bike wth a dog chasing her'. Count the occurrences of the word 'a' in the given sentence.
Example Output: 3

Example Input: Sentence: 'a man riding a bicycle on the road'. Count the occurrences of the word 'a' in the given sentence.
Example Output:
2