(Era artifacts) may pertain-to a male.Logical formLearned from6 sentences. Artifacts may be kept.Logical formLearned from6 sentences. An artifact can be sentient.Logical formLearned from6 sentences. An artifact can be extraterrestrial.Logical formLearned from6 sentences. Some artifacts can be in a museum.Logical formLearned from6 sentences. Excavations may reveal artifacts.Logical formLearned from6 sentences. Search can be for artifacts.Logical formLearned from6 sentences. Exhibits may include artifacts.Logical formLearned from6 sentences. Pieces may pertain-to an artifact.Logical formLearned from6 sentences. Artifacts can be from some periods.Logical formLearned from6 sentences. Artifacts may undergo a manufacture.Logical formLearned from6 sentences. Some artifacts may be preserved.Logical formLearned from6 sentences. Artifacts can be from a dig.Logical formLearned from6 sentences. An artifact can be textual.Logical formLearned from6 sentences. A status can be as an artifact.Logical formLearned from6 sentences.