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

Sentence: 'a group of people skiing down a mountain slope'. How many words contain the letter 'e' in the sentence.
2

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.
0

Sentence: 'a man runs to catch a flying frisbee'. How many words contain the letter 'x' in the sentence.

0