Rejection-sampled subset of the gemini-3.5-flash REP-exposed reasoning traces (Chia-Mu-Lab/openthoughts-rep-victim-gemini-3.5-flash-8k source harvest): only rows whose leaked CoT's \boxed answer matches the OpenThoughts gold (4707 rows). Variant = correct. Same pure-CoT target as the parent dataset (theft wrapper stripped). Built for the distillation MATH500 push.
