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

Example Input: Sentence: 'a very big nice looking kitchen that is well lit'. How many words contain the letter 'r' in the sentence.
Example Output: 1

Example Input: Sentence: 'a man sanding next to a cow in a pen'. How many words contain the letter 'h' in the sentence.
Example Output: 0

Example Input: Sentence: 'a brown bear standing next to a giant rock'. How many words contain the letter 'j' in the sentence.
Example Output:
0