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

Ex Input:
Sentence: 'a woman in blue shorts standing on a  tennis court holding a racquet'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a man with a racket leaps in the air to hit a ball'. Count the occurrences of the word 'racket' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'a toilet sits beneath a framed drawing of a gorilla'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

3