Test 2: Verifying classifications against expected values...
Case 0: CORRECT - Sarah Chen <-> Marcus Johnson = True
Case 1: CORRECT - David Park <-> Jennifer Walsh = False
Case 2: CORRECT - Rachel Torres <-> Michael Okonkwo = True
Case 3: CORRECT - James Liu <-> Amanda Stevens = False
Case 4: CORRECT - Emily Richardson <-> Tom Bradley = True
Case 5: CORRECT - Kevin Patel <-> Lisa Zhang = False
Case 6: CORRECT - Olivia Martinez <-> Robert Kim = True
Case 7: CORRECT - Daniel Brown <-> Sophia Lee = False
Case 8: CORRECT - Chris Anderson <-> Patricia Nguyen = True
Case 9: CORRECT - Andrew Thompson <-> Maria Santos = False
Case 10: CORRECT - Jessica Williams <-> Brian O'Connor = True
Case 11: CORRECT - Nathan Clark <-> Michelle Davis = False
Case 12: CORRECT - Laura Chen <-> Steven Wright = True
Case 13: CORRECT - Ryan Murphy <-> Angela Foster = False
Case 14: CORRECT - Hannah Miller <-> George Adams = True
Case 15: CORRECT - Tyler Robinson <-> Samantha Brooks = False
Case 16: CORRECT - Diana Rodriguez <-> William Chang = True
Case 17: CORRECT - Eric Foster <-> Nicole Baker = False
Case 19: CORRECT - Mark Peterson <-> Katherine Liu = False

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Results: 19/20 correct (95.0%)
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Errors:
  - Case 18: WRONG - Expected True, got False (Alexandra Green <-> Jason Kim)

SUCCESS: Achieved 95.0% accuracy (threshold: 80%)