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

Input: Consider Input: Sentence: 'a fresh flower on a table in a piture of water'. How many words contain the letter 'n' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a big pan full of tasty looking meat and vegetables'. How many words contain the letter 'c' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a red stoplight that is on a pole'. How many words contain the letter 'n' in the sentence.


Output: 1