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

Input: Consider Input: Sentence: 'a bed has an empty bag and folded laundry stacked on it'. How many words contain the letter 'm' in the sentence.

Output: 1


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 laptop and a bed in a small room'. How many words contain the letter 'm' in the sentence.


Output: 2