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

Example Input: Sentence: 'a kitchen that is very nice and clean'. How many words contain the letter 't' in the sentence.
Example Output: 2

Example Input: Sentence: 'a large field is next to a river'. How many words contain the letter 'j' in the sentence.
Example Output: 0

Example Input: Sentence: 'a cat is lying on a chair next to a remote control and cell phone'. How many words contain the letter 'r' in the sentence.
Example Output:
3