TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a young person flying through the air while riding a skateboard'. How many words contain the letter 'd' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'some people standing around a line of tennis courts'. How many words contain the letter 'c' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'man opening a box of certified organic bakery donuts'. How many words contain the letter 'i' in the sentence.

SOLUTION:
3