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: 'an over head shot of a young man skateboarding in a skate park'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a black counter top of a stove inside a kitchen'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

3