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

Ex Input:
Sentence: 'a man wearing glasses sits on a bench looking to the side'. Count the occurrences of the word 'man' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'a train going over a bridge that is over water'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a man sits on a bench at a bus stop with all his belongings'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:

3