A hijacking can be mysterious.Logical formLearned from6 sentences. A freighter can be mysterious.Logical formLearned from6 sentences. (Air disasters) can be mysterious.Logical formLearned from6 sentences. A (freedom fighter) can be mysterious.Logical formLearned from6 sentences. A (motorcyle accident) can be mysterious.Logical formLearned from6 sentences. A (mass beaching) can be mysterious.Logical formLearned from6 sentences. A (killer virus) can be mysterious.Logical formLearned from6 sentences. (Disease sars) can be mysterious.Logical formLearned from6 sentences. Rafts can be mysterious.Logical formLearned from6 sentences. Sentences can be mysterious.Logical formLearned from6 sentences. A disapperance can be mysterious.Logical formLearned from6 sentences. Gems can be mysterious.Logical formLearned from6 sentences. Sinkings can be mysterious.Logical formLearned from5 sentences. An ancient civilization can be mysterious.Logical formLearned from5 sentences. A plateau can be mysterious.Logical formLearned from5 sentences.