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

Input: Consider Input: Sentence: 'a toilet and long handled plunger in a cleaned bathroom'. How many words contain the letter 'i' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a construction worker smashes away at the roof of a building'. How many words contain the letter 'b' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'the man is doing construction work while the other watches'. How many words contain the letter 'p' in the sentence.


Output: 0