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

Ex Input:
Sentence: 'some people standing around a line of tennis courts'. How many words contain the letter 'c' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a woman swinging a tennis racquet in the air'. How many words contain the letter 'z' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'the woman has stopped to sit down and go on her laptop'. How many words contain the letter 'v' in the sentence.

Ex Output:

0