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

Ex Input:
Sentence: 'a group of people dressed to ski standing in the snow'. How many words contain the letter 'b' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a man rides a black motorcycle around a curve'. How many words contain the letter 'y' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a homemade pizza is shown with cheese and chicken'. How many words contain the letter 't' in the sentence.

Ex Output:

1