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

Input: Consider Input: Sentence: 'a young girl plays tennis in a court with grass in the cracks'. How many words contain the letter 'w' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a bearded man sits on a couch with an electronic device in his hand'. How many words contain the letter 'e' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a crib set up under the window in nursery room'. How many words contain the letter 'f' in the sentence.


Output: 0