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

Ex Input:
Sentence: 'an image of a man with a tennis racket in hand'. How many words contain the letter 'u' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a picture of bottles and cans in someones kitchen'. How many words contain the letter 'c' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a group of zebras running in a field'. How many words contain the letter 't' in the sentence.

Ex Output:

0