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

Ex Input:
Sentence: 'horses standing and laying down in the grass on a hill above a lake'. How many words contain the letter 'g' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'man in blue shirt hitting a tennis ball back'. How many words contain the letter 'q' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a water fountain sitting in the middle of a bathroom'. How many words contain the letter 'h' in the sentence.

Ex Output:

2