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 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 14: CORRECT - Hannah Miller <-> George Adams = True
Case 15: CORRECT - Tyler Robinson <-> Samantha Brooks = False
Case 19: CORRECT - Mark Peterson <-> Katherine Liu = False

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Results: 14/20 correct (70.0%)
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Errors:
  - Case 5: WRONG - Expected False, got True (Kevin Patel <-> Lisa Zhang)
  - Case 6: WRONG - Expected True, got False (Olivia Martinez <-> Robert Kim)
  - Case 13: WRONG - Expected False, got True (Ryan Murphy <-> Angela Foster)
  - Case 16: WRONG - Expected True, got False (Diana Rodriguez <-> William Chang)
  - Case 17: WRONG - Expected False, got True (Eric Foster <-> Nicole Baker)
  - Case 18: WRONG - Expected True, got False (Alexandra Green <-> Jason Kim)

FAILED: Only 70.0% accuracy (threshold: 80%)