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

Ex Input:
Sentence: 'lots of colorful watercraft parked at a large body of water'. Count the occurrences of the word 'of' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a group of people standing outside in a park eating food on paper plates'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a brown and white dog sitting on top of a piece of food'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

2