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

Ex Input:
Sentence: 'a tabby cat rests on a suitcase set on the floor in a room'. How many words contain the letter 'q' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a biscuit that someone has taken a bite out of'. How many words contain the letter 'k' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a traffic light with a red heart in place of the red light'. How many words contain the letter 'i' in the sentence.

Ex Output:

5