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

Input: Consider 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.

Output: 1

Input: Consider Input: Sentence: 'a bed room with a large window and a neatly made bed'. Count the occurrences of the word 'a' in the given sentence.

Output: 3

Input: Consider Input: Sentence: 'a young man relaxes on a couch with a cat'. Count the occurrences of the word 'a' in the given sentence.
Output: 3