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

Ex Input:
Sentence: 'people riding on an old style passenger train'. How many words contain the letter 'q' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a picture of a scene in a baseball game'. How many words contain the letter 'g' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a table with a vase of roses sitting atop'. How many words contain the letter 'f' in the sentence.

Ex Output:

1