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 couple is fast asleep at 3 in the morning'. How many words contain the letter 'y' in the sentence.
Example Output: 0

Example Input: Sentence: 'a tennis player caught jumping up to hit the ball'. How many words contain the letter 'j' in the sentence.
Example Output:
1