X-rays may show artifacts.Logical formLearned from15 sentences. An artifact can be from the past.Logical formLearned from15 sentences. Artifacts may be uncovered.Logical formLearned from15 sentences. Artifacts may undergo construction.Logical formLearned from15 sentences. A museum may contain artifacts.Logical formLearned from15 sentences. Artifacts can be in collections.Logical formLearned from15 sentences. Artifacts may tell stories.Logical formLearned from15 sentences. An artifact may undergo a theft.Logical formLearned from15 sentences. Artifacts can be delicate.Logical formLearned from15 sentences. Artifacts may undergo protection.Logical formLearned from15 sentences. Thousands may pertain-to artifacts.Logical formLearned from15 sentences. Some artifacts may be excavated.Logical formLearned from14 sentences. Artifacts may undergo a discovery.Logical formLearned from14 sentences. Artifacts may be destroyed.Logical formLearned from14 sentences. Artifacts may be used.Logical formLearned from14 sentences.