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

Input: Consider Input: Sentence: 'a white cat sitting on a bed next to a night stand'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a person doing a jump on a snowboard'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a person that is surfing in the water'. Count the occurrences of the word 'is' in the given sentence.


Output: 1