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

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: 'antique fire truck restored and displayed at outdoor event'. How many words contain the letter 'x' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a little child with a cellphone to their ear'. How many words contain the letter 'k' in the sentence.

Ex Output:

0