Artifacts can be composite.Logical formLearned from6 sentences. Artifacts may pertain-to a show-biz-star.Logical formLearned from6 sentences. Artifacts can be from some sites.Logical formLearned from6 sentences. (Stone artifacts) can be sophisticated.Logical formLearned from6 sentences. Artifacts can be mystic.Logical formLearned from6 sentences. Artifacts may be leave_behinded.Logical formLearned from6 sentences. Variety can be constituted-of-or-filled-with (stone artifacts).Logical formLearned from6 sentences. An artifact may undergo a disappearance.Logical formLearned from6 sentences. Hunter-gatherers of an archaic period may use variety of (stone artifacts).Logical formLearned from6 sentences. A function may pertain-to artifacts.Logical formLearned from6 sentences. Artifacts can be from periods.Logical formLearned from6 sentences. An artifact may be stolen.Logical formLearned from6 sentences. Exhibits may feature artifacts.Logical formLearned from6 sentences. Artifacts can be celtic.Logical formLearned from6 sentences. Artifacts may reveal that something-is-the-case.Logical formLearned from6 sentences.