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: 'five kids playing with frisbees on a sunny day'. How many words contain the letter 'p' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'three brown fourlegged animals with horns grazing in the pasture'. How many words contain the letter 'u' in the sentence.

Ex Output:

2