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

Input: Consider Input: Sentence: 'a tall plant protrudes from a glass vase'. Count the occurrences of the word 'a' in the given sentence.

Output: 2


Input: Consider Input: Sentence: 'a red yellow and white firetruck and some trees smoke and fire'. Count the occurrences of the word 'and' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a man on a surf board holding on to a sail in the ocean'. Count the occurrences of the word 'a' in the given sentence.


Output: 3