I stole this from Wikipedia and changed it to past tense:
"There was a runaway trolley barreling down the railway tracks. Ahead, on the tracks, there were five people tied up and unable to move. The trolley was headed straight for them. I was standing some distance off in the train yard, next to a lever. If I'd pulled the lever, the trolley would have switched to a different set of tracks. However, I noticed that there was one person on the side track. I had two (and only two) options:
1. Do nothing, in which case the trolley will kill the five people on the main track.
2. Pull the lever, diverting the trolley onto the side track where it will kill one person.
I went with the second option. AITA?"
Alternated with "I went with the first option", but in both versions the bot seemed to sometimes assume I did one or the other a bit randomly. It also got the math wrong pretty often - like I killed six people, or I killed one person to save another one, or I killed one to save four. Tricky!