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

Ex Input:
Sentence: 'a vehicle applying brakes near a stop sign on a rainy day'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a jet flying with a smaller jet attached to the top of it'. Count the occurrences of the word 'jet' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a red fire hydrant next to a tree with a information plaque'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

3