Assertion: pyramid's structure | /r/HasProperty | guard houses
Facets:
Source sentences:
text: Later on in 1937, more excavation was made by the American School of Archaeology at Athens under the direction of L. Lord who concluded that both the structure at Ligurio and the one at Cephalaria were "guard houses capable of accommodating a small garrison who could control the countryside and be safe behind their walls from surprise attacks by a few persons.