Assertion: beacon | /r/ObjectUse | used as lighthouse
Facets:
value: for signalling over land
type: PURPOSE
value: for navigation at sea
type: PURPOSE
Source sentences:
text: Classically, beacons were fires lit at well-known locations on hills or high places, used either as lighthouses for navigation at sea, or for signalling over land that enemy troops were approaching, in order to alert defenses.