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

Example Input: Sentence: 'a plastic container of food including chicken and broccoli'. Count the occurrences of the word 'and' in the given sentence.
Example Output: 1

Example Input: Sentence: 'a bedroom is shown with a rug on the floor'. Count the occurrences of the word 'on' in the given sentence.
Example Output: 1

Example Input: Sentence: 'couple of people sitting out in the snow with skis beside them'. Count the occurrences of the word 'them' in the given sentence.
Example Output:
1