| human | Q5 |
| P7902 | Deutsche Biographie (GND) ID | 116625392 |
| P11239 | DFK Paris person ID | 0006904878 |
| P2163 | FAST ID | 128659 |
| P227 | GND ID | 116625392 |
| P2671 | Google Knowledge Graph ID | /g/11bwlrc4w0 |
| P213 | ISNI | 0000000081171098 |
| P10553 | IxTheo authority ID | 078112435 |
| P9918 | Kallías ID | PE00017173 |
| P244 | Library of Congress authority ID | n84106748 |
| P8234 | LiederNet author ID | 15366 |
| P1006 | Nationale Thesaurus voor Auteursnamen ID | 072268972 |
| P1207 | NUKAT ID | n01018291 |
| P12458 | Parsifal cluster ID | 444517 |
| P5504 | RISM ID | people/41022808 |
| P214 | VIAF ID | 37671948 |
| P10832 | WorldCat Entities ID | E39PBJgMBrXWBYQ8D7XqPd6h73 |
| P27 | country of citizenship | Germany | Q183 |
| P734 | family name | Gillen | Q29617069 |
| Gillen | Q29617069 | ||
| Gillen | Q29617069 | ||
| P735 | given name | Otto | Q18029644 |
| Otto | Q18029644 | ||
| P1412 | languages spoken, written or signed | German | Q188 |
| P106 | occupation | writer | Q36180 |
| lyricist | Q822146 | ||
| art historian | Q1792450 | ||
| journalist | Q1930187 | ||
| essayist | Q11774202 | ||
| theatre critic | Q17337766 | ||
| P21 | sex or gender | male | Q6581097 |
| Otto Gillen | wikipedia |
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