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

Ex Input:
Sentence: 'a colorful hydrant  sitting in the grass on a quiet street'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a red passenger bus drives down a busy road'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a lady is standing next to a stove waiting and looking off to the next room'. Count the occurrences of the word 'the' in the given sentence.

Ex Output:

1