They had three children: Jane Lang, David Lang, and actor Stephen Lang.

Entity and relation annotations:
id: 0
type: entity
value: text: Jane Lang
labels: <Person>
id: 1
type: entity
value: text: David Lang
labels: <Person>
id: 2
type: entity
value: text: Stephen Lang
labels: <Person>
type: relation
to_id: 1
labels: Person:family:Person
from_id: 0
type: relation
to_id: 2
labels: Person:family:Person
from_id: 0
type: relation
to_id: 2
labels: Person:family:Person
from_id: 1