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

Ex Input:
Sentence: 'a gray cat is wearing a santa hat'. 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: 'a man in a pink outfit walking down a runway on skis'. How many words contain the letter 't' in the sentence.

Ex Output:
1