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

Example Input: Sentence: 'an old motorcycle with the seat missing parked in a garage with other parts and motorcycles'. How many words contain the letter 'r' in the sentence.
Example Output: 6

Example Input: Sentence: 'some kids are all taking a photograph together'. How many words contain the letter 'e' in the sentence.
Example Output: 3

Example Input: Sentence: 'two skiers getting air time on the slopes'. How many words contain the letter 't' in the sentence.
Example Output:
4