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

Input: Consider Input: Sentence: 'a man with a racket leaps in the air to hit a ball'. Count the occurrences of the word 'racket' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'a motorcycle rider on a red bike some dirt and a sign'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a man with a racket leaps in the air to hit a ball'. Count the occurrences of the word 'racket' in the given sentence.


Output: 1