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 water fountain sitting in the middle of a bathroom'. How many words contain the letter 'h' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a row of toilets is on a table in front of a wall outside'. How many words contain the letter 'b' in the sentence.


Output: 1