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

Input: Consider Input: Sentence: 'train cars lined up under a bridge full of traffic'. Count the occurrences of the word 'under' in the given sentence.

Output: 1


Input: Consider Input: Sentence: 'a building with a gold steeple under a cloudy sky'. Count the occurrences of the word 'a' in the given sentence.

Output: 3


Input: Consider Input: Sentence: 'a lady that is at a sink in a kitchen'. Count the occurrences of the word 'a' in the given sentence.


Output: 3