Rond Vidar was the last Green Lantern until he was killed by Superboy-Prime.

Entity and relation annotations:
id: 0
type: entity
value: text: Rond Vidar
labels: <Person>
id: 1
type: entity
value: text: Superboy-Prime
labels: <Person>
id: 2
type: entity
value: text: Green Lantern
labels: <Organization>
type: relation
to_id: 0
labels: Person:harms:Person
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type: relation
to_id: 2
labels: Person:affiliated_with:Organization
from_id: 0