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

Input: Consider Input: Sentence: 'a fudge brownie with chocolate chips sits near a threeprong fork'. Count the occurrences of the word 'a' in the given sentence.

Output: 2


Input: Consider Input: Sentence: 'a small cat is sitting on a step by a door'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a male tennis player extending out swinging a tennis racket'. Count the occurrences of the word 'tennis' in the given sentence.


Output: 2