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

Ex Input:
Sentence: 'a table and white stove in a room'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a woman holding a child are looking at a cow over a fence'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
4


Ex Input:
Sentence: 'a pizza with sauce and very little cheese arranged on a table'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

2