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

Input: Consider Input: Sentence: 'there are people that are walking on the street'. Count the occurrences of the word 'that' in the given sentence.

Output: 1

Input: Consider Input: Sentence: 'a cat sitting near a window looking at a squirrel eating'. Count the occurrences of the word 'a' in the given sentence.

Output: 3

Input: Consider Input: Sentence: 'three urinals with lots of big tile pieces on the wall'. Count the occurrences of the word 'urinals' in the given sentence.
Output: 1