(Telephone calls) to a russian embassy may ring unanswered.Logical formLearned from6 sentences. A track may ring a field.Logical formLearned from6 sentences. Fires may be ringed.Logical formLearned from6 sentences. Countries may ring an ocean.Logical formLearned from6 sentences. Thousands of (riot police) may be ringed.Logical formLearned from6 sentences. A jail may be ringed by sharpshooters.Logical formLearned from6 sentences. Bells may ring without interruption.Logical formLearned from6 sentences. A ceremony may ring hollow.Logical formLearned from6 sentences. Calls to officials may ring unanswered.Logical formLearned from6 sentences. A valley may be ringed by (mountain peaks).Logical formLearned from6 sentences. Chairman may ring a bell.Logical formLearned from6 sentences. A chant may ring in ears.Logical formLearned from6 sentences. (Church bells) may ring across a world-city.Logical formLearned from6 sentences. Some police may be ringed.Logical formLearned from6 sentences. Police may ring a courthouse.Logical formLearned from6 sentences.