instruction:
Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.
question:
Two Worlds II is an action role-playing game developed by Polish video game developer Reality Pump and published by TopWare Interactive as a sequel to 2007's Two Worlds.
answer:
Who was the publisher of Two Worlds II?

question:
Twisted Obsession (original Spanish title: El sueno del mono loco, literally The Dream of the Mad Monkey) is a 1989 Spanish erotic thriller directed by Fernando Trueba, starring Jeff Goldblum and Miranda Richardson.
answer:
Which is the basis of Twisted Obsession?

question:
Although mining provides people with many needed resources, the environmental costs can be high. Surface mining clears the landscape of trees and soil, and nearby streams and lakes are inundated with sediment. Pollutants from the mined rock, such as heavy metals, enter the sediment and water system. Acids flow from some mine sites, changing the composition of nearby waterways (Figure 1.1). U.S. law has changed in recent decades so that a mine region must be restored to its natural state, a process called reclamation. This is not true of older mines. Pits may be refilled or reshaped and vegetation planted. Pits may be allowed to fill with water and become lakes or may be turned into landfills. Underground mines may be sealed off or left open as homes for bats. Click image to the left or use the URL below. URL: Acid drainage from a surface coal mine in Missouri.
answer:
according to u.s. law, a mine region