Forces may have a base.Logical formLearned from13 sentences. A hospital may pertain-to a base.Logical formLearned from13 sentences. A base may host refuelings.Logical formLearned from13 sentences. Visits can be to a base.Logical formLearned from13 sentences. A direction may pertain-to an (army base).Logical formLearned from13 sentences. Advantage may pertain-to a (knowledge base).Logical formLearned from13 sentences. Bases can be close to a country.Logical formLearned from13 sentences. Some villages can be at a base.Logical formLearned from13 sentences. Rivals can be within (power bases).Logical formLearned from13 sentences. A (military spokesman) can be at a base.Logical formLearned from13 sentences. An (army base) can be for interrogation.Logical formLearned from13 sentences. Explosions can be at an (army base).Logical formLearned from13 sentences. A prison can be on a base.Logical formLearned from13 sentences. A (marine base) can be guarded.Logical formLearned from13 sentences. (Helicopter gunships) can be from a base.Logical formLearned from13 sentences.