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

Ex Input:
Sentence: 'a man with a hat on sitting in a car with the door open and a laptop on his lap'. How many words contain the letter 'e' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'some people are sitting around a black table'. How many words contain the letter 'v' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'two people on a bridge over a body of waer'. How many words contain the letter 'z' in the sentence.

Ex Output:

0