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

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

Ex Output:
1

Ex Input:
Sentence: 'a cat in a tie sits on the couch'. How many words contain the letter 't' in the sentence.

Ex Output:
4

Ex Input:
Sentence: 'a woman in a white sundress is standing on a sunlit beach between two surfboards'. How many words contain the letter 'm' in the sentence.

Ex Output:
1