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

Ex Input:
Sentence: 'a plate of food with bread fried crab cole slaw a lemon tomato pickle and lettuce on it'. Count the occurrences of the word 'of' in the given sentence.

Ex Output:
1


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: 'a blue boat is up on blocks at a dock'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

2