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

Input: Consider Input: Sentence: 'a young man cutting a pizza on top of a table'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'some food is sitting on a stove top in a kitchen area'. Count the occurrences of the word 'is' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'a man holding a snow board looking at a snowy ski slope'. Count the occurrences of the word 'a' in the given sentence.


Output: 3