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 dressed as a nun skateboards down the street'. How many words contain the letter 'e' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'bus parked next to a side walk on the road'. How many words contain the letter 'd' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'bright pink truck advertising allure parked in front of a building'. How many words contain the letter 'w' in the sentence.

Ex Output:

0