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: 'the noodle salad has many spices in it'. How many words contain the letter 'v' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a giraffe walking about in a grassy wildlife area'. How many words contain the letter 's' in the sentence.


Output: 1