The r2 re-eval showed 14/70 answers naming 起运/年数 as this chart's undetermined step, copied from the open-item sentence, while the card said unknown or ad_direction. The sentence now names no step and says not to infer one. Golden recaptured with TTL=0. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DbBXoyn7Hj3LCW3BUs5bZ8