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

Ex Input:
Sentence: 'a young boy holds a baseball bat while a man stands next to him'. How many words contain the letter 'p' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a stuffed animal yellow giraffe placed next to a sandwich as if the giraffe is eating it with a large body of water and grass areas in the background'. How many words contain the letter 'g' in the sentence.

Ex Output:
6


Ex Input:
Sentence: 'a single cupboard hangs above a sink in a kitchen'. How many words contain the letter 'w' in the sentence.

Ex Output:

0