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

Input: Consider Input: Sentence: 'a man who is performing a trick on a skateboard'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a bedroom with a bed next to a closet'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a man on a flat truck is behind a large group of farm animals'. Count the occurrences of the word 'a' in the given sentence.


Output: 3