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

Input: Consider Input: Sentence: 'a home computer setup with two laptops on a desk'. Count the occurrences of the word 'a' in the given sentence.

Output: 2


Input: Consider Input: Sentence: 'a bathroom with a toilet and a bath tub'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a transit vehicle on  track with water in the background'. Count the occurrences of the word 'a' in the given sentence.


Output: 1