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

Ex Input:
Sentence: 'a pair of people swimming out to sea on some surfboards'. How many words contain the letter 'j' in the sentence.

Ex Output:
0

Ex Input:
Sentence: 'a skier posing for a photo in front of a slope'. How many words contain the letter 'a' in the sentence.

Ex Output:
3

Ex Input:
Sentence: 'a beautiful street in a european city scape'. How many words contain the letter 'y' in the sentence.

Ex Output:
1