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

Input: Consider Input: Sentence: 'a large zebra standing out in a grassy field'. How many words contain the letter 'e' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a jet airliner carrying a small shuttle above it'. How many words contain the letter 'r' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'two young children play a video game console'. How many words contain the letter 'u' in the sentence.


Output: 1