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

Input: Consider Input: Sentence: 'an individual poses for a picture beside a bright window'. How many words contain the letter 'y' in the sentence.

Output: 0

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: 'a group of young men are posing holding frisbees'. How many words contain the letter 'l' in the sentence.
Output: 1