TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a fresh flower on a table in a piture of water'. How many words contain the letter 'n' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a large airplane flying over a dry grass hillside'. How many words contain the letter 'e' in the sentence.

SOLUTION: 4

PROBLEM: Sentence: 'a couple of people that are on some skateboards'. How many words contain the letter 'o' in the sentence.

SOLUTION:
6