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

Input: Consider Input: Sentence: 'a toilet sits in the middle of a street'. How many words contain the letter 'b' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a picture of a scene in a baseball game'. How many words contain the letter 'g' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a cat is sitting in an umbrella which sits on a rug'. How many words contain the letter 'e' in the sentence.


Output: 1