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

Input: Consider Input: Sentence: 'people are parked along side the road by pay here signs'. How many words contain the letter 'a' in the sentence.

Output: 5


Input: Consider Input: Sentence: 'a man paddle boarding in the middle of the ocean'. How many words contain the letter 'i' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a motorcycle is parked in front of a doorway'. How many words contain the letter 'e' in the sentence.


Output: 2