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

Ex Input:
Sentence: 'a train on the side of a road on the edge of the water'. How many words contain the letter 'u' in the sentence.

Ex Output:
0

Ex Input:
Sentence: 'an individual poses for a picture beside a bright window'. How many words contain the letter 'y' in the sentence.

Ex Output:
0

Ex Input:
Sentence: 'a family room and small kitchen with laundry machine'. How many words contain the letter 'k' in the sentence.

Ex Output:
1