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

Ex Input:
Sentence: 'well made salad on a white plate and a wine glass besides'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a bathroom with a toilet and a bath tub'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'the airplane is flying high in the cloudless sky'. Count the occurrences of the word 'the' in the given sentence.

Ex Output:

2