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

Ex Input:
Sentence: 'a group of men in front of a table of green bananas while a man in the blue plaid shirt holds his hand out as if to hold on to something'. Count the occurrences of the word 'in' in the given sentence.

Ex Output:
2

Ex Input:
Sentence: 'a man and a woman in a spare living room space standing far apart from each other'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
3

Ex Input:
Sentence: 'a tall brick tower with a clock mounted on its face'. Count the occurrences of the word 'a' in the given sentence.

Ex Output:
2