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

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: 'the plane that the president uses on the runway'. Count the occurrences of the word 'the' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a minifridge and microwave inside of a hotel room'. Count the occurrences of the word 'a' in the given sentence.


Output: 2