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

Ex Input:
Sentence: 'a sandwich shop with cars parked in front of it'. How many words contain the letter 'u' in the sentence.

Ex Output:
0

Ex Input:
Sentence: 'he wants everyone to know that he has serious intentions for the tennis game'. How many words contain the letter 'h' in the sentence.

Ex Output:
5

Ex Input:
Sentence: 'two people riding an elephant over a bridge'. How many words contain the letter 'j' in the sentence.

Ex Output:
0