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

Input: Consider Input: Sentence: 'a bucket is sitting on the floor of a bathroom'. Count the occurrences of the word 'a' in the given sentence.

Output: 2


Input: Consider Input: Sentence: 'a colorful photo of a bike against a fence with mountains in the back'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a business man walking down a street near a truck'. Count the occurrences of the word 'business' in the given sentence.


Output: 1