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

Input: Consider Input: Sentence: 'a group of cows standing next to each other'. Count the occurrences of the word 'a' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'a small child laying in a bed next to a shelf'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a woman with a red tutu standing in the middle of a city street'. Count the occurrences of the word 'a' in the given sentence.


Output: 3