(Base effects) can be unfavourable.Logical formLearned from12 sentences. Jets may use bases.Logical formLearned from12 sentences. A territory may be used as a base.Logical formLearned from12 sentences. Bases may be cleared.Logical formLearned from12 sentences. A helicopter may return to base.Logical formLearned from12 sentences. (Base areas) may pertain-to persons.Logical formLearned from12 sentences. A world-city may serve as a base of operations.Logical formLearned from12 sentences. A quality may pertain-to a (customer base).Logical formLearned from12 sentences. A (press conference) can be at a base.Logical formLearned from12 sentences. A base can be fallen.Logical formLearned from12 sentences. (Air force base) can be in a us-state.Logical formLearned from12 sentences. A flight can be to a base.Logical formLearned from12 sentences. Bases can be ready.Logical formLearned from12 sentences. Some attacks can be on a base.Logical formLearned from12 sentences. (Army bases) may undergo an evacuation.Logical formLearned from12 sentences.