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

Ex Input:
Sentence: 'a night scene of a secluded  street with nearby parking garage'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a jumbo jet airplane carrying a space shuttle in the air'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a bunch of carrots a lot of broccoli and some turnups'. Count the occurrences of the word 'of' in the given sentence.

Ex Output:

2