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

Example Input: Sentence: 'a person holds a video game remote as another man looks on'. How many words contain the letter 'g' in the sentence.
Example Output: 1

Example Input: Sentence: 'a clothing line with teddy bears hung by their ears'. How many words contain the letter 'n' in the sentence.
Example Output: 3

Example Input: Sentence: 'a guy on a surf board riding a wave'. How many words contain the letter 'x' in the sentence.
Example Output:
0