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: 'a hotdog with a bite taken out on a napkin'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a person sitting at a picnic table near a lake'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

3