A question may remain a mystery.Logical formLearned from40 sentences. A republic may remain on edge.Logical formLearned from40 sentences. Prices may remain higher.Logical formLearned from40 sentences. An order may remain in effect.Logical formLearned from40 sentences. (Oil prices) may remain low.Logical formLearned from40 sentences. A male may remain upright.Logical formLearned from40 sentences. A male may remain unchanged.Logical formLearned from40 sentences. An outlook may remain optimistic.Logical formLearned from40 sentences. Inflation may remain unchanged.Logical formLearned from40 sentences. Prospects may remain strong.Logical formLearned from40 sentences. A demonstration may remain peaceful.Logical formLearned from40 sentences. A female may remain a widow.Logical formLearned from40 sentences. A female may remain skeptical.Logical formLearned from40 sentences. A man may remain silent.Logical formLearned from40 sentences. Buildings may remain intact.Logical formLearned from40 sentences.