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

Input: Consider Input: Sentence: 'adult men playing with flying disc at popular beach'. How many words contain the letter 'o' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a pizza pie is on a wooden serving tray'. How many words contain the letter 's' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a woman and a child are flying a kite'. How many words contain the letter 'm' in the sentence.


Output: 1