Task: Question Answering
Input (English): My wife and I invited some friends over to our flat to watch a television show we all like.  We needed to make the flat clean so that our friends would be comfortable when they came over.  My wife decided to pick up all of the things that were on the floor.  She then passed a vacuum over all of the floor to make sure that they were nice and clean.  I wanted to clean the bathroom, so I went in there with glass cleaner and toilet bowel cleaner to make sure that it was very clean.  I poured the toilet bowel cleaner into the porcelain toilet and scrubbed the inside and outside to ensure that it was clean.  The kitchen was then cleaned by my wife with a rag and a good cleaner.  We straightened up the pillows on the couch as a little finishing touch to our work.
Output (English): Did they clean their apartment yesterday?