{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Isomerism", "refinement": "This problem specifically addresses geometric isomerism, which occurs in compounds with restricted rotation around a double bond or within a ring structure.", "specific_scope": "The focus is on identifying which of the given compounds can exhibit geometric isomerism based on their structural characteristics.", "goal": "Determine which compound(s) among the candidates can exist in different geometric forms due to the presence of a double bond or a cyclic structure."}, "summary": "This question pertains to the concept of geometric isomerism in organic chemistry, which is a type of stereoisomerism. Geometric isomerism occurs when there is restricted rotation around a double bond or within a ring structure, leading to different spatial arrangements of atoms. Among the candidates, only 2-butene can exhibit geometric isomerism due to its double bond, allowing for cis and trans configurations. The other compounds either lack a double bond or do not have the necessary structural features to exhibit this type of isomerism."}