A ceremony may mark an anniversary of soviet troops.Logical formLearned from7 sentences. A weekday may mark an anniversary of a soviet invasion of a country.Logical formLearned from7 sentences. Former soviet republics may introduce currencies.Logical formLearned from7 sentences. A (launch site) can be soviet.Logical formLearned from7 sentences. A currency may pertain-to a soviet republic.Logical formLearned from7 sentences. Refugees can be from former soviet republics.Logical formLearned from7 sentences. A soviet republic may be considered.Logical formLearned from7 sentences. Soviet songs can be patriotic.Logical formLearned from7 sentences. Officers may be killed by a soviet secret police.Logical formLearned from7 sentences. A free-trade union can be in a soviet bloc.Logical formLearned from7 sentences. Thousands of officers may be slaughtered by a soviet secret police.Logical formLearned from7 sentences. Some officers may be killed by soviet troops.Logical formLearned from7 sentences. Soviet leader may admit that something-is-the-case.Logical formLearned from7 sentences. A precedent can be for former soviet states.Logical formLearned from7 sentences. A soviet leader can be at a time.Logical formLearned from7 sentences.