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

Ex Input:
Sentence: 'a little baby boy wearing an vest and tie'. How many words contain the letter 'e' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a man riding waves on his surfboard in the ocean'. How many words contain the letter 'v' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a hand is holding a half eaten sandwich'. How many words contain the letter 'f' in the sentence.

Ex Output:

1