{"meta":{"name":"ΕΝΝΟΙΟΛΟΓΙΚΟΣ ΧΑΡΤΗΣ ΣΥΜΜΕΤΡΙΑΣ"},"format":"node_tree","data":{"id":"root","topic":"ΣΥΜΜΕΤΡΙΑ","expanded":true,"children":[{"id":"easy","topic":"ΠΕΡΙΒΑΛΛΟΝ","expanded":true,"direction":"left","children":[{"id":"easy1","topic":"ΑΝΘΡΩΠΟΣ","expanded":true},{"id":"easy2","topic":"ΖΩΙΚΟ ΒΑΣΙΛΕΙΟ","expanded":true},{"id":"easy3","topic":"ΦΥΤΙΚΟ ΒΑΣΙΛΕΙΟ","expanded":true},{"id":"easy4","topic":"ΤΕΧΝΗΤΟ ΠΕΡΙΒΑΛΛΟΝ","expanded":false}]},{"id":"open","topic":"ΑΙΣΘΗΣΕΙΣ","expanded":true,"direction":"right","children":[{"id":"open1","topic":"ΟΡΑΣΗ","expanded":true},{"id":"open2","topic":"ΑΦΗ","expanded":true}]}]}}