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

Input: Consider Input: Sentence: 'a name and clock lit up at night'. How many words contain the letter 'y' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'an lshaped desk covered in various computers and accessories'. How many words contain the letter 'e' in the sentence.

Output: 5


Input: Consider Input: Sentence: 'graffiti and stickers on the back of a stop sign'. How many words contain the letter 'b' in the sentence.


Output: 1