You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "What type of site are both Cahokia and Emerald Mound and Village Site?" whose answer is pre-Columbian.
Each document should contain about 30 words, and these documents should contain useful information.

Query: types of archaeological sites for Cahokia and Emerald Mound
Useful Output:

Doc 1: She cites Owl Creek and Bynum Mounds, Emerald Mounds – which is the largest single mound in the Chickasaw homelands. (Cahokia is the largest mound site.)
Doc 2: Known as Emerald Mound in Lebanon, IL, about 25 miles east of the Cahokia mounds, the site is thought to be culturally associated with the well-
Doc 3: Three of the largest mound building peoples were the Adena, Hopewell, and Missisippians. While some mounds were used as burial sites, the
Doc 4: In this paper, we present our investigations on the Emerald Avenue, a potential Mississippian period (a.d. 1050–1400) roadway in southwestern
Doc 5: Cahokia Mounds State Historic Site includes 51 platform, ridgetop, and conical mounds; residential, public, and specialized activity areas; and a section of