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

Ex Input:
Sentence: 'a pizza with sauce and very little cheese arranged on a table'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2


Ex Input:
Sentence: 'a man riding skis down a snow covered slope'. Count the occurrences of the word 'snow' in the given sentence.

Ex Output:
1


Ex Input:
Sentence: 'a pizza on a plate wineglasses and another plate on a table'. Count the occurrences of the word 'on' in the given sentence.

Ex Output:

2