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

Example Input: Sentence: 'there is a small bowl of soup and vegetables'. How many words contain the letter 'g' in the sentence.
Example Output: 1

Example Input: Sentence: 'a dog lying down with a blanket on top of it'. How many words contain the letter 'o' in the sentence.
Example Output: 5

Example Input: Sentence: 'a group of young men are posing holding frisbees'. How many words contain the letter 'l' in the sentence.
Example Output:
1