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 is the origin of the state name oregon?" whose answer is unknown.
Each document should contain about 30 words, and these documents should contain useful information.

Query: origin of the state name oregon
Useful Output:

Doc 1: The place name “Oregon” has no really clear provenance. There are several theories and hypotheses. The generally accepted origin is Spanish “orejón”.
Doc 2: Eastern Oregon​​ Umatilla, pronounced as “YOO-muh-TIL-uh,” derives directly from the village name Imatilam, meaning “many rocks/rocky bottom.”
Doc 3: The origin of the state name is uncertain, but "Oregon" might have been derived from a 1715 French map which refers to the Wisconsin River as "Ouaricon-sint."
Doc 4: The name Oregon dates back to a written record of at least 1765, credited to a British soldier named Major Robert Rogers.
Doc 5: that is closest to Oregon has Spanish origins. Rodrigo Montezuma, and explorer from New Spain, first made reference to the word orejo in 1598.