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

Ex Input:
Sentence: 'a person resting on a bench outside a furniture store'. How many words contain the letter 'e' in the sentence.

Ex Output:
6


Ex Input:
Sentence: 'people holding a surfboard and walking down the beach'. How many words contain the letter 'n' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a person jumping high with a snowboard'. How many words contain the letter 'g' in the sentence.

Ex Output:

2