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

Ex Input:
Sentence: 'a collection of furniture is in a living room'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a woman pushing the stroller is walking down the street'. Count the occurrences of the word 'the' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a pizza cutter on a pizza that is missing a slice'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

3