Question: The Stoner Site is a substantial archaeological site in the far eastern portion of the U.S. state of Illinois, archaeological investigations have shown it to be one of the area's most important archaeological sites for the Allison-Lamotte culture, an archaeological culture that inhabited the Wabash River valley in which country during the later portion of the Woodland period?
Sentence (from "Stoner Site"): After more than a decade of fruitful research and predictions of potentially rich results from future work, it has been designated a historic site.
Relevant evidence: No