You will be given a definition of a task first, then some input of the task.
In this task, you will be given a passage, a question and a list of single-word events identified from the passage. The goal is to point out all events from the given event list that can answer the question. If a question is unanswerable or none of the events answer the question, output should be empty.

Passage: In fiscal 1989, Elco earned $7.8 million, or $1.65 a share. The company's stock fell $1.125 to $13.625 in over-the-counter trading yesterday. Question: What happened while the company's stock fell? Events: ['earned', 'fell', 'trading']
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
trading