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

Ex Input:
Sentence: 'a small dog wearing a bright red bow tie as a collar'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a flat screen tv sitting in the corner of a living room next to a pumpkin'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'close up of a dog walking on a beach near a body of water'. Count the occurrences of the word 'of' in the given sentence.

Ex Output:

2