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

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: 'two men are dancing in a parade with brown umbrellas'. How many words contain the letter 'r' in the sentence.

Output: 4

Input: Consider Input: Sentence: 'a white polar bear holding a green cone'. How many words contain the letter 'e' in the sentence.
Output: 4