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

Ex Input:
Sentence: 'a sign reading butt street on the corner of a building with a no parking sign below it'. How many words contain the letter 'h' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a woman riding a motorcycle down a busy city street'. How many words contain the letter 'w' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a bike parked in front of a brick building'. How many words contain the letter 'd' in the sentence.

Ex Output:

2