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

Input: Consider Input: Sentence: 'a giant clock mounted on a building'. Count the occurrences of the word 'a' in the given sentence.

Output: 2


Input: Consider Input: Sentence: 'a toddler and baby on a wooden floor scatter with papers'. Count the occurrences of the word 'a' in the given sentence.

Output: 2


Input: Consider Input: Sentence: 'there are people that are walking on the street'. Count the occurrences of the word 'that' in the given sentence.


Output: 1