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

Input: Consider Input: Sentence: 'a bus waits by a curb next to some trees'. Count the occurrences of the word 'a' in the given sentence.

Output: 2


Input: Consider Input: Sentence: 'this outside the capitol building where people are flying kites'. Count the occurrences of the word 'this' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'a person snowboading down part of a hill'. Count the occurrences of the word 'a' in the given sentence.


Output: 2