He is the son of Sir Robert Sainsbury and Lisa van den Bergh.

Entity and relation annotations:
id: 0
type: entity
value: text: Robert Sainsbury
labels: <Person>
id: 1
type: entity
value: text: Lisa van den Bergh
labels: <Person>
id: 2
type: entity
value: text: Sir
labels: <Title>
type: relation
to_id: 1
labels: Person:family:Person
from_id: 0
type: relation
to_id: 2
labels: Person:holds_title:Title
from_id: 0