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

Input: Consider Input: Sentence: 'people holding a surfboard and walking down the beach'. How many words contain the letter 'n' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a woman is posing next to a stop sign'. How many words contain the letter 'u' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'the tall giraffes are communicating with each other by the tree'. How many words contain the letter 'j' in the sentence.


Output: 0