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

Ex Input:
Sentence: 'a black and white photo of an airplane being loaded'. Count the occurrences of the word 'of' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'three adult giraffe stand near water in the woods'. Count the occurrences of the word 'water' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'a man sitting on top of a bench next to a bird'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

3