{"knowledge_schema": {"broad_category": "Organic Chemistry \u2192 Rearrangement Reactions", "refinement": "This category includes reactions where the structure of a molecule is rearranged to form a more stable intermediate, often involving carbocation formation.", "specific_scope": "The focus is on reactions that lead to the formation of more stable carbocations through the migration of alkyl groups, followed by nucleophilic attack to form alcohols.", "goal": "Identify the specific reaction that involves the migration of an alkyl group to form a more stable carbocation, which is then attacked by a nucleophile (water) to yield an alcohol."}, "summary": "In organic chemistry, rearrangement reactions involve the transformation of a molecule's structure to form more stable intermediates. The question specifically asks for a reaction where an alkyl group migrates to create a more stable carbocation, followed by a nucleophilic attack by water to produce an alcohol. The correct answer is the Wagner-Meerwein rearrangement, which fits this description, while the other options do not involve this specific mechanism."}