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

Input: Consider Input: Sentence: 'fresh daisies in a rectangular green glass vase'. How many words contain the letter 's' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a large elephant is walking by some bars'. How many words contain the letter 'v' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a man doing a trick on a skateboard on a ramp'. How many words contain the letter 'k' in the sentence.


Output: 2