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

Ex Input:
Sentence: 'a large jetliner with a space shuttle on its back next to a fighter jet'. How many words contain the letter 'm' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a gothic tower features a clock near a river'. How many words contain the letter 'e' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'several men standing up in a large room holding wii controllers'. How many words contain the letter 'h' in the sentence.

Ex Output:

1