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

Ex Input:
Sentence: 'a jet flying with a smaller jet attached to the top of it'. Count the occurrences of the word 'jet' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a pitcher winds up for a throw at a neighborhood baseball field'. Count the occurrences of the word 'throw' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'a man holding a para sail chute across from a board'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

3


