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

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 man sanding next to a cow in a pen'. How many words contain the letter 'h' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a group of three men are on a mountaintop with a snowboard'. How many words contain the letter 'i' in the sentence.

Ex Output:

2