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

Ex Input:
Sentence: 'a man tossing a frisbee to another man to catch'. Count the occurrences of the word 'to' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a group of women sitting at a table near a window'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a smiling young man holding a stuffed teddy bear'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

2