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

Input: Consider Input: Sentence: 'a pink unicorn painted on a newspaper box across the street from a bus in front of a theater'. Count the occurrences of the word 'a' in the given sentence.

Output: 4


Input: Consider Input: Sentence: 'a man is looking slyly at the camera while sitting at his laptop at a desk'. Count the occurrences of the word 'at' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a table topped with plates of food and cups of coffee'. Count the occurrences of the word 'plates' in the given sentence.


Output: 1