OSM tag name=Πλακουλίθρα matches Plakoulithra in these Wikidata fields:
| Ionian Islands | admin_level, boundary=administrative, place=island, place=islet |
| Islands of Attica | admin_level, boundary=administrative, place=island, place=islet |
| Islands of Greece | admin_level, boundary=administrative, place=island, place=islet |
| Landforms of Islands (regional unit) | admin_level, boundary=administrative, place=island, place=islet |