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

Input: Consider Input: Sentence: 'a large clock tower under a grey cloudy sky'. How many words contain the letter 'l' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a man paddle boarding in the middle of the ocean'. How many words contain the letter 'i' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a rusty yellow fire hydrant on a sidewalk'. How many words contain the letter 'f' in the sentence.


Output: 1