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

Input: Consider Input: Sentence: 'a airplane is seen at the airport with other airplanes'. How many words contain the letter 'z' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a girl laying on a couch with a bird on her head'. How many words contain the letter 'v' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'boy holding lambs head and guiding him to a judge in agricultural show'. How many words contain the letter 'i' in the sentence.


Output: 5