(Peacekeeping troops) may stand_by shotguns.Logical formLearned from2 sentences. Hundreds may stand_by in alleys.Logical formLearned from2 sentences. Officers may stand_by in a downtown.Logical formLearned from2 sentences. Police may stand_by as demonstrators.Logical formLearned from2 sentences. Security may stand_by during an attack.Logical formLearned from2 sentences. A soviet army may stand_by on an east bank of a river.Logical formLearned from2 sentences. A (design team) may stand_by with smiles.Logical formLearned from2 sentences. Troops may stand_by without firring a shot.Logical formLearned from2 sentences. Authorities may stand_by at airport.Logical formLearned from2 sentences. A queen may stand_by on a morning.Logical formLearned from2 sentences. (Indonesian soldiers) may stand_by without intervenning as hundreds of persons.Logical formLearned from2 sentences. A person may stand_by in a distance.Logical formLearned from2 sentences. (Embassy staffers) may stand_by in tears.Logical formLearned from2 sentences. (Security personnel) may stand_by without intervenning during an attack.Logical formLearned from2 sentences. Police may stand_by in case of emergencies.Logical formLearned from2 sentences.