A person may keep a key.Logical formLearned from47 sentences. A key can be to an office.Logical formLearned from46 sentences. Some rows can be constituted-of-or-filled-with keys.Logical formLearned from46 sentences. A key can be to an economy.Logical formLearned from46 sentences. A key may be returned.Logical formLearned from46 sentences. A (room key) may pertain-to persons.Logical formLearned from46 sentences. A country may hold a key.Logical formLearned from46 sentences. A male may get keys.Logical formLearned from46 sentences. A defense can be a key.Logical formLearned from46 sentences. Keys may be lost.Logical formLearned from46 sentences. A side may pertain-to a key.Logical formLearned from46 sentences. Keys can be basic.Logical formLearned from46 sentences. Keys can be in a car.Logical formLearned from46 sentences. Keys can be to a building.Logical formLearned from46 sentences. A key can be to economic growth.Logical formLearned from46 sentences.