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

Ex Input:
Sentence: 'a crowd of people flying kites near the capitol building'. How many words contain the letter 'a' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a white cat looking in a rectangular mirror in a female bedroom'. How many words contain the letter 'q' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'women work behind a counter in an assembly line fashion'. How many words contain the letter 'k' in the sentence.

Ex Output:

1