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

Ex Input:
Sentence: 'a variety of old motorcycles on display in a shop'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a black and white image of an old castle with a clock'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a cat is peaking out from under some blue covers'. Count the occurrences of the word 'blue' in the given sentence.

Ex Output:

1


