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

Ex Input:
Sentence: 'girl standing in front of an elephant in a dirt lot'. Count the occurrences of the word 'dirt' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'the table  in the apartment is set for two to have cake and a doll is seated in one chair'. Count the occurrences of the word 'is' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a man standing on a ladder in a library'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

3