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

Example Input: Sentence: 'a skier posing for a photo in front of a slope'. How many words contain the letter 'a' in the sentence.
Example Output: 3

Example Input: Sentence: 'a man standing in the ocean holding a surfboard'. How many words contain the letter 'c' in the sentence.
Example Output: 1

Example Input: Sentence: 'skateboarder jumping his board in the middle the city'. How many words contain the letter 't' in the sentence.
Example Output:
4