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

Ex Input:
Sentence: 'giraffe with front legs spread looking at water'. Count the occurrences of the word 'legs' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'a desktop computers sitting on a desk next to a laptop'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3


Ex Input:
Sentence: 'a cat in a fridge by a jug of milk'. Count the occurrences of the word 'fridge' in the given sentence.

Ex Output:

1