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

Example Input: Sentence: 'a view from inside a train cart going down a track'. How many words contain the letter 'e' in the sentence.
Example Output: 2

Example Input: Sentence: 'a bird flying over the water in the ocean shore'. How many words contain the letter 'o' in the sentence.
Example Output: 3

Example Input: Sentence: 'a couple of zebras that are walking around'. How many words contain the letter 'l' in the sentence.
Example Output:
2