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

Ex Input:
Sentence: 'a bathroom with towels hanging next to a window'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


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 group of motorcycles parked next to each other in front of a fence'. Count the occurrences of the word 'of' in the given sentence.

Ex Output:

2