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

Input: Consider Input: Sentence: 'a large clock mounted to the side of a tall building'. Count the occurrences of the word 'a' in the given sentence.

Output: 2


Input: Consider Input: Sentence: 'a metal counter in a kitchen with a sink'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a teddy bear sitting on the edge of a toilet seat in a bathroom'. Count the occurrences of the word 'a' in the given sentence.


Output: 3