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

Ex Input:
Sentence: 'a man and woman holding electronic devices in their hands'. How many words contain the letter 'e' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a person skiing down part of a marked race course'. How many words contain the letter 'z' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a man flying through the air on a skateboard'. How many words contain the letter 'd' in the sentence.

Ex Output:

1