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

Input: Consider Input: Sentence: 'a black and white photo of an airplane being loaded'. Count the occurrences of the word 'of' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'a white plate sitting next to a cup of liquid on top of a table'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a clock is up near a statue of a bird'. Count the occurrences of the word 'a' in the given sentence.


Output: 3