Calls to (rebel headquarters) may ring unanswered.Logical formLearned from5 sentences. Some troops may be ringed.Logical formLearned from5 sentences. Fences may be ringed with barbed wire.Logical formLearned from5 sentences. An assertion may ring hollow.Logical formLearned from5 sentences. Sharpshooters may be ringed.Logical formLearned from5 sentences. Infantrymen may ring a temple of a (moon god).Logical formLearned from5 sentences. A (phone call) may ring unanswered.Logical formLearned from5 sentences. Forests may ring a world-city.Logical formLearned from5 sentences. Neighborhoods may ring a capital.Logical formLearned from5 sentences. Hundreds of (security forces) may be ringed.Logical formLearned from5 sentences. Roads may ring fields.Logical formLearned from5 sentences. A (landing site) may be ringed with helicopters.Logical formLearned from5 sentences. A compound may be ringed by Israeli forces.Logical formLearned from5 sentences. Northern lights may ring a (north pole).Logical formLearned from5 sentences. A number may ring busy.Logical formLearned from5 sentences.