Preston killed his Cornet Alexander Hepburn (brother of Robert Hepburn).

Entity and relation annotations:
id: 0
type: entity
value: text: Preston
labels: <Person>
id: 1
type: entity
value: text: Alexander Hepburn
labels: <Person>
id: 2
type: entity
value: text: Robert Hepburn
labels: <Person>
id: 3
type: entity
value: text: Cornet
labels: <Title>
type: relation
to_id: 3
labels: Person:holds_title:Title
from_id: 1
type: relation
to_id: 2
labels: Person:family:Person
from_id: 1
type: relation
to_id: 1
labels: Person:harms:Person
from_id: 0