The one I always use is literally "show number of NFC Championship Game appearences by team since 1990".

The only AI that has ever gotten the answer right was Deepseek R1. All the rest fail miserably at this one. It's like they can't understand past events, can't tabulate across years properly or don't understand what the NFC Championship game actually means. Many results "look" right, but they are always wrong. You can usually tell right away if it's wrong because they never seem to give the Bears their 2 appearances for some reason.

Have you tried in the Deep Research or Thinking mode? I've had pretty good success with tabulating past events this way.