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

Input: Consider Input: Sentence: 'a keyboard on a desk beneath a monitor'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a person showing a selfie of themself to the camera'. Count the occurrences of the word 'a' in the given sentence.

Output: 2


Input: Consider Input: Sentence: 'a blue and white passenger train coming to a stop'. Count the occurrences of the word 'a' in the given sentence.


Output: 2