TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a man holding an owl in a lush green field'. How many words contain the letter 'y' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'a couple of zebras are standing in a pin'. How many words contain the letter 'a' in the sentence.

SOLUTION: 5

PROBLEM: Sentence: 'a man that is sitting by a window staring out the window'. How many words contain the letter 's' in the sentence.

SOLUTION:
3