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

Input: Consider Input: Sentence: 'real to life dummy stuffed into a suitcase'. Count the occurrences of the word 'a' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'a small dog wearing a bright red bow tie as a collar'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a mirror is brightly displayed in a lavatory'. Count the occurrences of the word 'a' in the given sentence.


Output: 2