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

Input: Consider Input: Sentence: 'a close up of a business sign on a building'. How many words contain the letter 'y' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a woman with long red hair packing herself into a suitcase'. How many words contain the letter 'i' in the sentence.

Output: 5


Input: Consider Input: Sentence: 'a bus riding on a street near an intersection'. How many words contain the letter 'u' in the sentence.


Output: 1