An artifact may pertain-to an industrial age.Logical formLearned from12 sentences. Artifacts may be sold.Logical formLearned from12 sentences. Artifacts can be from times.Logical formLearned from12 sentences. An owner may pertain-to artifacts.Logical formLearned from12 sentences. Some artifacts can be from a museum.Logical formLearned from11 sentences. Some artifacts may be found in an area.Logical formLearned from11 sentences. Artifacts can be dated.Logical formLearned from11 sentences. A class can be constituted-of-or-filled-with artifacts.Logical formLearned from11 sentences. A combination can be constituted-of-or-filled-with artifacts.Logical formLearned from11 sentences. Artifacts can be plundered.Logical formLearned from11 sentences. Some artifacts can be from a period.Logical formLearned from11 sentences. Presence may pertain-to artifacts.Logical formLearned from11 sentences. Artifacts may be left.Logical formLearned from11 sentences. Artifacts can be from a wreck.Logical formLearned from11 sentences. Artifacts may suggest that something-is-the-case.Logical formLearned from11 sentences.