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

Example Input: Sentence: 'several people and a dog riding on a small boat'. How many words contain the letter 'l' in the sentence.
Example Output: 3

Example Input: Sentence: 'antique fire truck restored and displayed at outdoor event'. How many words contain the letter 'x' in the sentence.
Example Output: 0

Example Input: Sentence: 'this is an old style refrigerator white with wood grain handles'. How many words contain the letter 'i' in the sentence.
Example Output:
6