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

Ex Input:
Sentence: 'a giraffe that is eating some leaves from a tree'. How many words contain the letter 'g' 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: 'man standing in front of television above fireplace in residential living room'. How many words contain the letter 'u' in the sentence.

Ex Output:

0