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

Ex Input:
Sentence: 'a truck and a part of a disabled plane'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a group of people sitting around a table with wine glasses and plates'. Count the occurrences of the word 'group' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'a plate of salad on a table containing tuna spinach and carrot'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

2