Mani Matter's literary estate is archived in the Swiss Literary Archives in Bern.

Entity and relation annotations:
id: 0
type: entity
value: text: Mani Matter
labels: <Person>
id: 1
type: entity
value: text: Bern
labels: <Location>
id: 2
type: entity
value: text: the Swiss Literary Archives
labels: <Organization>
type: relation
to_id: 1
labels: Organization:located_in:Location
from_id: 2