Task: Question Answering
Input (English): Context: Last night I dreamed I was on a train . I got off at my stop ( or so I thought ) only to realise as the doors were shutting behind me that I was in the wrong place . " Bollocks , " I thought . Still , I was only one stop away , so I thought I would just walk the rest of the way . However , I soon got totally lost , and then had to face the decision of carrying on walking , or walking all the way back the way I came again , and waiting for a train . 
Question: What was the reason for the narrator getting lost ?
Output (English): It was a dream state .