B.5.2:4.3 - Entry discipline via U.AbductivePrompt
AnomalyStatement remains a canonical prompt species, but it is not the only one. B.5.2 also accepts the broader prompt species governed by B.5.2.0, such as ProblemCuePrompt, OpportunityCuePrompt, and ProbeCuePrompt. This broadens entry without dissolving type discipline.