Bases can be operational.Logical formLearned from221 sentences. A (military base) may pertain-to a us-state.Logical formLearned from220 sentences. A base can be fortified.Logical formLearned from219 sentences. Bases can be in a continent.Logical formLearned from217 sentences. An (air base) may pertain-to an international-political-entity.Logical formLearned from217 sentences. A base may pertain-to a volcano.Logical formLearned from213 sentences. A base can be circular.Logical formLearned from212 sentences. Bases can be on balls.Logical formLearned from212 sentences. An (air base) can be soviet.Logical formLearned from212 sentences. A base may pertain-to stairs.Logical formLearned from211 sentences. A base may pertain-to falls.Logical formLearned from210 sentences. A base can be institutional.Logical formLearned from210 sentences. A base can be granular.Logical formLearned from209 sentences. An airline can be a base.Logical formLearned from206 sentences. A base can be militant.Logical formLearned from206 sentences.