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: 'trash cans and a fire hydrant are on the curb of a sidewalk'. How many words contain the letter 'u' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'modern bathroom stall featuring electronic gadgets for user to employ'. How many words contain the letter 'd' in the sentence.


Output: 2