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

Ex Input:
Sentence: 'a bottle of beer and a red plate of food'. How many words contain the letter 'u' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'several ties hang from a bar in a closet'. How many words contain the letter 'e' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a desk with three computer monitors and one keyboard'. How many words contain the letter 'p' in the sentence.

Ex Output:

1