Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

The 80-string koto (or hachijugen) was an invention of Japanese composer Michio Miyagi which appeared In 1923.
By whom was 80-string koto discovered?

The 1988 Dungeons & Dragons role-playing game module Ruins of Adventure was produced using the same adventure scenario as Pool of Radiance, using the same plot, background, setting, and many of the same characters as the computer game.
The Pool of Radiance is based upon what?

Marjorie Bruce or Marjorie de Brus (1296/7 -- 2 March 1316) was the eldest daughter of Robert the Bruce, King of Scots by his first wife, Isabella of Mar, and the founder of the Stewart dynasty.

Which lady Marjorie Bruce was born to?

