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

Input: Consider Input: Sentence: 'a man in a suit pinstriped shirt and red tie'. Count the occurrences of the word 'a' in the given sentence.

Output: 2


Input: Consider Input: Sentence: 'an orange and white cat rolling around a wooden floor'. Count the occurrences of the word 'cat' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'a man flying through the air while riding a pair of skis'. Count the occurrences of the word 'a' in the given sentence.


Output: 2