A helicopter can be from a base.Logical formLearned from16 sentences. A base may pertain-to prisoner.Logical formLearned from16 sentences. A base can be elevated.Logical formLearned from16 sentences. A base may pertain-to a vase.Logical formLearned from16 sentences. Bases can be constituted-of-or-filled-with knowledge.Logical formLearned from16 sentences. A base may pertain-to a flagellum.Logical formLearned from16 sentences. A base can be for some years.Logical formLearned from16 sentences. A forward base can be constituted-of-or-filled-with operations.Logical formLearned from16 sentences. A base can be for use.Logical formLearned from16 sentences. (Military bases) may undergo a closure.Logical formLearned from16 sentences. A base can be elliptical.Logical formLearned from16 sentences. A school may pertain-to a base.Logical formLearned from16 sentences. A base may pertain-to a fall.Logical formLearned from16 sentences. A base can be for an attack.Logical formLearned from16 sentences. A base may pertain-to a period.Logical formLearned from16 sentences.