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

Example Input: Sentence: 'a group of many horses going about in a grassy meadow'. How many words contain the letter 'f' in the sentence.
Example Output: 1

Example Input: Sentence: 'a stir fry consisting of rice broccoli and other vegetables'. How many words contain the letter 'e' in the sentence.
Example Output: 3

Example Input: Sentence: 'a man holding a frisbee above a crowd of young men'. How many words contain the letter 'i' in the sentence.
Example Output:
2