Risks may be associated with an asteroid impact.Logical formLearned from4 sentences. An inner part may pertain-to an asteroid belt.Logical formLearned from4 sentences. A debris can be asteroid.Logical formLearned from4 sentences. An asteroid belt can be between a planet.Logical formLearned from4 sentences. An asteroid can be in a main asteroid belt.Logical formLearned from3 sentences. An (observation program) can be asteroid.Logical formLearned from3 sentences. An asteroid belt can be unexplored.Logical formLearned from3 sentences. A (mining infrastructure) can be asteroid.Logical formLearned from3 sentences. A family can be an asteroid family.Logical formLearned from3 sentences. Cities can be asteroid.Logical formLearned from3 sentences. (Rendezvous missions) can be asteroid.Logical formLearned from3 sentences. An event can be asteroid.Logical formLearned from3 sentences. An asteroid may orbit in an asteroid belt.Logical formLearned from3 sentences. An albedo can be asteroid.Logical formLearned from3 sentences. Bodies can be asteroid.Logical formLearned from3 sentences.