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

Input: Consider Input: Sentence: 'some kids are all taking a photograph together'. How many words contain the letter 'e' in the sentence.

Output: 3


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: 'a silver plane flies through the cloudy sky'. How many words contain the letter 'c' in the sentence.


Output: 1