Assertion: nobility's family | /r/CapableOf | exert control
Facets:
value: traditionally
type: OTHER
value: over one of the three marches
type: TEMPORAL
Source sentences:
text: Not all Dukes were equal though: traditionally the three most senior ducal families each exerted control over one of the three Marches which made up the Federated Suns, with lesser duchies beneath them.