Ernmas was killed during the first battle of Mag Tuired.

Entity and relation annotations:
id: 0
type: entity
value: text: Ernmas
labels: <Person>
id: 1
type: entity
value: text: battle of Mag Tuired
labels: <Event>
type: relation
to_id: 1
labels: Person:participates_in:Event
from_id: 0