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

Input: Consider Input: Sentence: 'a person taking a photo in a mirror'. Count the occurrences of the word 'person' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'a propeller plane that is parked in a hanger'. Count the occurrences of the word 'a' in the given sentence.

Output: 2


Input: Consider Input: Sentence: 'a teddy bear is fastened to a mossy tree trunk'. Count the occurrences of the word 'a' in the given sentence.


Output: 2