{"knowledge_schema": {"broad_category": "Organic Chemistry \u2192 Named Reactions \u2192 Reaction Mechanisms", "refinement": "This problem involves identifying starting materials for specific named reactions based on their products and reaction conditions.", "specific_scope": "The focus is on two distinct reactions: one involving the formation of a spiro compound from a diol and sulfuric acid, and the other involving the formation of an alcohol from a compound treated with BuLi and protonation.", "goal": "Determine the correct starting materials for each reaction based on the provided candidates."}, "summary": "This question requires identifying the correct starting materials for two named reactions in organic chemistry. The first reaction involves a diol that, when reacted with sulfuric acid, yields a specific spiro compound. The second reaction involves a compound that, when treated with butyllithium (BuLi) and subsequently protonated, forms a specific alcohol. The correct candidates for the starting materials are A = 2,7-dimethyloctahydronaphthalene-4a,8a-diol for the first reaction and B = (((3-methylbut-2-en-1-yl)oxy)methyl)benzene for the second."}