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

Example Input: Sentence: 'a very cute white dog standing by a table with food'. How many words contain the letter 'o' in the sentence.
Example Output: 2

Example Input: Sentence: 'a van follows behind a bus on a rural road'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'young adults in food in serving line at indoor event'. How many words contain the letter 's' in the sentence.
Example Output:
2