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

Example Input: Sentence: 'a small grey bird eating food from paper plates on a picnic table'. Count the occurrences of the word 'small' in the given sentence.
Example Output: 1

Example Input: Sentence: 'a big rig is driving through a construction site'. Count the occurrences of the word 'big' in the given sentence.
Example Output: 1

Example Input: Sentence: 'a tall red brick cathedral with two large towers'. Count the occurrences of the word 'tall' in the given sentence.
Example Output:
1