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

Input: Consider Input: Sentence: 'the bathroom has a shower toilet toilet paper and a sink with leaves in it'. How many words contain the letter 'v' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'this is a yellow train riding the rails'. How many words contain the letter 'n' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a woman in the city is holding a bright kite'. How many words contain the letter 'v' in the sentence.


Output: 0