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

Ex Input:
Sentence: 'a young man attempting to fly a kite on a forest hillside'. How many words contain the letter 'f' in the sentence.

Ex Output:
2

Ex Input:
Sentence: 'the noodle salad has many spices in it'. How many words contain the letter 'v' in the sentence.

Ex Output:
0

Ex Input:
Sentence: 'a stuffed elephant is resting on a chair'. How many words contain the letter 'q' in the sentence.

Ex Output:
0