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

Input: Consider Input: Sentence: 'he wants everyone to know that he has serious intentions for the tennis game'. How many words contain the letter 'h' in the sentence.

Output: 5


Input: Consider Input: Sentence: 'a woman with a shopping bag talking on a cell phone'. How many words contain the letter 'e' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'the laptop computer has a small black keyboard'. How many words contain the letter 'n' in the sentence.


Output: 0