TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a large red sign on a metal pole'. How many words contain the letter 'q' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'a microwaved broccoli and cheese dish and a spoon'. How many words contain the letter 'n' in the sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a swan is swimming on a calm lake'. How many words contain the letter 'w' in the sentence.

SOLUTION:
2