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

The Lambro (Western Lombard: Lamber or Lambar) is a river of Lombardy, northern Italy, a left tributary of the Po.
What river is Lambro a tributary of?

Henry Fevrier was the father of the pianist Jacques Fevrier.
Who is the offspring of Henry Février?

Almost nothing is left of the Bastille except some remains of its stone foundation that were relocated to the side of the Boulevard Henri IV. Historians were critical of the Bastille in the early 19th century, and believe the fortress to have been a relatively well-administered institution, but deeply implicated in the system of French policing and political control during the 18th century.

What material was used for Bastille?