Classifier Instance:

Anchor text: Union Pass
Target Entity: Union_Pass
Preceding Context: In 1810, fur trader, entrepreneur, and one of the wealthiest men in the U.S., John Jacob Astor of the American Fur Company, outfitted an expedition (known as the Astor Expedition or Astorians) under Wilson Price Hunt to find a possible overland supply route and trapping territory for fur trading posts. Fearing attack by the Blackfoot Indians, the overland expedition veered south of Lewis and Clark's route into what is now Wyoming and in the process passed across
Succeeding Context: and into Jackson Hole, Wyoming. From there they went over the Teton Range via Teton Pass and then down to the Snake River in Idaho. They abandoned their horses at the Snake River, made dugout canoes, and attempted to use the river for transport. After a few days' travel they soon discovered that steep canyons, waterfalls and impassable rapids made travel by river impossible. Too far from their horses to retrieve them, they had to cache most of their goods and walk the rest of the way to the Columbia River where they made new boats and traveled to the newly established Fort Astoria. The expedition demonstrated that much of the route along the Snake River plain and across to the Columbia was passable by pack train or with minimal improvements, even wagons. This knowledge would be incorporated into the concatenated trail segments as the Oregon Trail took its early shape.
Paragraph Title: Astorians
Source Page: Oregon Trail

Ground Truth Types:

Predicted Types:

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