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

Ex Input:
Sentence: 'a female in a blue shirt a cat and a plate'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
4


Ex Input:
Sentence: 'there are many people that are riding a elephant'. Count the occurrences of the word 'are' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a living room couch covered with a variety of pillows'. Count the occurrences of the word 'covered' in the given sentence.

Ex Output:

1