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

Ex Input:
Sentence: 'two women in an arena with a cow'. How many words contain the letter 'u' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a large clock mounted in the face of a building'. How many words contain the letter 'e' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a man surfing in front of a big wave'. How many words contain the letter 'l' in the sentence.

Ex Output:

0