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

Ex Input:
Sentence: 'a man riding waves on his surfboard in the ocean'. How many words contain the letter 'v' in the sentence.

Ex Output:
1

Ex Input:
Sentence: 'a mirror above a bathroom sink next to a window'. How many words contain the letter 'v' in the sentence.

Ex Output:
1

Ex Input:
Sentence: 'a bunch of people sit on barriers in front of a church one of whom has an umbrella and a handbag and one has a backpack'. How many words contain the letter 'j' in the sentence.

Ex Output:
0