TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a person in the air with a skateboard upside down underneath'. How many words contain the letter 'i' in the sentence.

SOLUTION: 4

PROBLEM: Sentence: 'a beautiful woman playing with a small green bird'. How many words contain the letter 't' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a small boat drives on a lake surrounded by trees'. How many words contain the letter 'm' in the sentence.

SOLUTION:
1