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

Input: Consider Input: Sentence: 'three elephants standing between a fence and a road'. Count the occurrences of the word 'a' in the given sentence.

Output: 2


Input: Consider Input: Sentence: 'a pitcher winds up for a throw at a neighborhood baseball field'. Count the occurrences of the word 'throw' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'a kitchen with two sinks with a dish rack in one and dirty dishes in another'. Count the occurrences of the word 'a' in the given sentence.


Output: 2