Task: Information Extraction
Input (English): Sentence1: Carl was having a lot of trouble with his neighbor, a cranky old man. Sentence2: Whenever Carl left his house, the old man complained about something. Sentence3: After fighting with the old man, Carl always felt guilty for yelling. Sentence4: He decided no matter what, he wouldn't get mad, he'd just accept it. Sentence5: The man still complained, but Carl didn't let it bug him any more.
Output (English): Neighbor, Carl