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

Example Input: Sentence: 'man and woman posing for picture before prom'. How many words contain the letter 'c' in the sentence.
Example Output: 1

Example Input: Sentence: 'two skiers standing side by side in the snow posing for a picture'. How many words contain the letter 'u' in the sentence.
Example Output: 1

Example Input: Sentence: 'many people on top of elephants in a deep river'. How many words contain the letter 'k' in the sentence.
Example Output:
0