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

Example Input: Sentence: 'a reflection of a wild animal in a side view mirror'. Count the occurrences of the word 'a' in the given sentence.
Example Output: 3

Example Input: Sentence: 'a group of kids swimming in ocean around a man on a surfboard'. Count the occurrences of the word 'a' in the given sentence.
Example Output: 3

Example Input: Sentence: 'a little girl sitting in front of a table full of dishes'. Count the occurrences of the word 'front' in the given sentence.
Example Output:
1