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

Input: Consider Input: Sentence: 'a man holding a racquet hits a tennis ball'. How many words contain the letter 'v' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'an old airplane sitting on top of a field'. How many words contain the letter 'h' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a person walking down a street while holding an umbrella'. How many words contain the letter 'e' in the sentence.


Output: 4