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

Ex Input:
Sentence: 'the street corner is flooded deep with water'. How many words contain the letter 'f' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a person skiing down part of a marked race course'. How many words contain the letter 'z' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a big pan full of tasty looking meat and vegetables'. How many words contain the letter 'c' in the sentence.

Ex Output:

0