Three witnesses describe the same event. Their stories don't quite line up — one of them is lying, and the others' statements prove it. Find the liar.
Case 00 — Example
Witness A:"It was raining heavily all afternoon."
Witness B:"The sun was shining and I sunbathed in the garden."
Witness C:"I remember the rain hitting my umbrella."
Witness B contradicts both A and C about the weather — B is the liar.