In this task, you need to count the number of words in a sentence that contain the given letter

Input: Consider Input: Sentence: 'unusual round vase with flower stems inside it'. How many words contain the letter 'c' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a living room with couches chairs and tables'. How many words contain the letter 'a' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'two people on small motorcycle with sidecar with crowd behind them'. How many words contain the letter 'c' in the sentence.


Output: 3