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

Ex Input:
Sentence: 'a group of people standing around a table under a light'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a woman with a walker is sitting on a park bench'. Count the occurrences of the word 'with' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'a man puts his head on his cat sitting on a suitcase'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

2