Derek's father, Paul Collins, was a radio operator during the Korean war.

Entity and relation annotations:
id: 0
type: entity
value: text: Derek
labels: <Person>
id: 1
type: entity
value: text: Paul Collins
labels: <Person>
id: 2
type: entity
value: text: the Korean war
labels: <Event>
id: 3
type: entity
value: text: radio operator
labels: <Title>
type: relation
to_id: 1
labels: Person:family:Person
from_id: 0
type: relation
to_id: 2
labels: Person:participates_in:Event
from_id: 1
type: relation
to_id: 3
labels: Person:holds_title:Title
from_id: 1