Problem: Keystone is an unincorporated community and census-designated place in central Keith County, Nebraska, United States. It lies along local roads near the North Platte River, northeast of the city of Ogallala, the county seat of Keith County. Its elevation is 3,100feet (945m). Although Keystone is unincorporated, it has a post office, with the ZIP code of 69144.

Based on the paragraph above can we conclude that "Keystone has never been called by another name."?

A: It's impossible to say

Problem: Early flying machines include all forms of aircraft studied or constructed before the development of the modern aeroplane by 1910. The story of modern flight begins more than a century before the first successful manned aeroplane, and the earliest aircraft thousands of years before.

Based on the paragraph above can we conclude that "The first successful human driven aeroplane had cupholders"?

A: It's impossible to say

Problem: Oasis was a literary anthology published in Cairo during World War II. It was edited by Denis Saunders, David Burk, and Victor Selwyn. The introduction was written by General Henry Maitland Wilson, who was at this time Commander-in-Chief of the Middle East.

Based on the paragraph above can we conclude that "General Henry Maitland Wilson originally was going to write the ending to the anthology."?

A:
It's impossible to say