Based on the given context, craft a common-sense question, especially those that are LONG, INTERESTING, and COMPLEX. The goal is to write questions that are easy for humans and hard for AI machines! To create such questions, here are some suggestions: A. What may (or may not) be the plausible reason for an event? B. What may (or may not) happen before (or after, or during) an event? C. What may (or may not) be a plausible fact about someone (or something)? D. What may (or may not) happen if an event happens (or did not happen)? You can also create other types of questions. DO NOT make your question answerable without looking at the context, or question of which the correct answer can be directly extracted from the context. DO NOT ask a question that requires very specialized knowledge that is not common sense. DO NOT ask too simple or too short questions. Your question must be related to the context and answerable with common sense. Try to add more variations and complexity to the questions.

Context: Thursday morning when I went to put my walking shoes on by the front door , I noticed several ants crawling around on the floor . Where did those come from ? I never had ants in here before . Since then I have been finding ants on the living room floor , and now in the kitchen .
What 's a possible reason there were ants crawling around on the floor ?

Context: It 's like riding a bicycle - I was pleased to discover . After so many years , it all came back . I ' m a bit rusty technically and completely out of shape , but it feels good .
What is probably true about the narrator ?

Context: I vacuumed and washed my floors ( leaving the house redolent of Method Wood for Good with almond oil ) , dusted and changed my sheets , while other laundry rumbled in the basement . It was while I was in the final stages of vacuuming my bedroom that lidocafe phoned and invited me to go the see a couple of the historic places open to the public this weekend . Remember I mentioned going to a couple on Canada Day ? Well , today is " BC Day " and it 's our 150th birthday this year , so some of the same places plus one or two more are open this weekend as well .

What may be the reason for the laundry rumbling ?