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

Ex Input:
Sentence: 'a small grey bird eating food from paper plates on a picnic table'. Count the occurrences of the word 'small' in the given sentence.

Ex Output:
1

Ex Input:
Sentence: 'two people on a motorcycle a man with baskets on a push cart'. Count the occurrences of the word 'two' in the given sentence.

Ex Output:
1

Ex Input:
Sentence: 'a cat eating out of a bowl with a dog laying on the floor near by'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3