Ytong and Hebel are brands of the international operating company Xella headquartered in Duisburg.

Entity and relation annotations:
id: 0
type: entity
value: text: Ytong
labels: <Organization>
id: 1
type: entity
value: text: Hebel
labels: <Organization>
id: 2
type: entity
value: text: Xella
labels: <Organization>
id: 3
type: entity
value: text: Duisburg
labels: <Location>
type: relation
to_id: 2
labels: Organization:is_subordinate_to:Organization
from_id: 0
type: relation
to_id: 2
labels: Organization:is_subordinate_to:Organization
from_id: 1
type: relation
to_id: 3
labels: Organization:located_in:Location
from_id: 2