Bookstores may ring.Logical formLearned from2 sentences. A doorbell may ring unanswered.Logical formLearned from2 sentences. Buildings may be ringed by (razor wire-topped fences).Logical formLearned from2 sentences. Some guards may ring a field.Logical formLearned from2 sentences. A dozen of black smoke may be ringed.Logical formLearned from2 sentences. (Guard towers) may ring a compound.Logical formLearned from2 sentences. Reasons may ring in a skull.Logical formLearned from2 sentences. A (traffic circle) may be ringed with columns.Logical formLearned from2 sentences. A space may be ringed by trees.Logical formLearned from2 sentences. A sound of explosions may ring throughout a world-city.Logical formLearned from2 sentences. An area may be ringed by panels of bulletproof glass.Logical formLearned from2 sentences. Oil may ring (alarm bells).Logical formLearned from2 sentences. Some divisions may ring a world-city.Logical formLearned from2 sentences. (Satellite phones) may ring without answer.Logical formLearned from2 sentences. Focus may ring a world-city.Logical formLearned from2 sentences.