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

Input: Consider Input: Sentence: 'a lighthouse with birds flying by it at a bay'. How many words contain the letter 'q' in the sentence.

Output: 0


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: 'the people are on the beach getting ready to surf'. How many words contain the letter 's' in the sentence.


Output: 1