{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Spectroscopy", "refinement": "This problem involves interpreting NMR data to identify the structure of a di-substituted aromatic compound based on its spectral characteristics.", "specific_scope": "The focus is on analyzing the 1H NMR data in relation to the presence of specific functional groups (carbonyl and aromatic-halogen) and the overall structure of the compound.", "goal": "Determine the correct 1H NMR data that corresponds to the described di-substituted aromatic compound with a carbonyl group and an aromatic-halogen bond."}, "summary": "This problem requires understanding the relationship between the structure of a di-substituted aromatic compound and its 1H NMR spectral data. The presence of a carbonyl group and an aromatic-halogen bond suggests specific chemical shifts in the NMR spectrum. The task is to analyze the provided candidates for 1H NMR data and identify which one accurately reflects the expected chemical environment of the protons in the compound. The goal is to select the correct NMR data that corresponds to the described compound."}