Wikidata entity: Q9980103
| P301 | category's main topic | ... | Q60052 (Gustav Kirchhoff) | Gustav Kirchhoff |
| P373 | Commons category | String | Gustav Robert Kirchhoff | ??? |
| P31 | instance of | ... | Q4167836 (Wikimedia category) | Wikimedia category |
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log id: 3240959