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

Input: Consider Input: Sentence: 'a counter top that has many pots and ingredients on it'. How many words contain the letter 'b' in the sentence.

Output: 0

Input: Consider Input: Sentence: 'a silver truck a street a person and buildings'. How many words contain the letter 'l' in the sentence.

Output: 2

Input: Consider Input: Sentence: 'a desk that is covered in books and papers there is a laptop on the desk'. How many words contain the letter 's' in the sentence.
Output: 6