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

Ex Input:
Sentence: 'a boy is playing video games in a dated living room'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a person on a beach flying a kite in the sky'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'an old tractor is sitting in the overgrowth'. Count the occurrences of the word 'the' in the given sentence.

Ex Output:

1