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

Ex Input:
Sentence: 'a stop sign with some words beneath it'. How many words contain the letter 't' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a woman bent down on the street holding her umbrella'. How many words contain the letter 'x' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'two males and a drink a laptop and a cellphone'. How many words contain the letter 'b' in the sentence.

Ex Output:

0