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

The War of the Spanish Succession was a European conflict of the early 18th century, triggered by the death of the childless Charles II of Spain in November 1700. His closest heirs were members of the Austrian Habsburg and French Bourbon families; acquisition of an undivided Spanish Empire or Monarchy by either threatened the European balance of power. Charles left his throne to Louis XIV's grandson Philip who was proclaimed King of Spain on 16 November 1700. Disputes over the separation of the Spanish and French crowns, division of territories and commercial rights led to war in 1701 between the Bourbons of France and Spain and the Grand Alliance, whose candidate was Archduke Charles, younger son of Habsburg Emperor Leopold. By 1710, fighting was deadlocked; Allied victories in Italy and the Low Countries had driven the French back to their borders but they could not achieve a decisive breakthrough while Philip was secure in Spain. When Archduke Charles succeeded his brother Joseph I as Emperor in 1711, Britain effectively withdrew, forcing its Allies to make peace and leading to the 1713 Treaty of Utrecht, followed in 1714 with Rastatt and Baden. Philip was confirmed as King of Spain and renounced the French throne; Spain retained the bulk of its pre-war territories outside Europe with their European territories divided between Austria, Britain and Savoy. Longer term impacts included Britain's emergence as the leading maritime and commercial power, the beginning of the decline of the Dutch Republic, the creation of a centralised Spanish state and the acceleration of the break-up of the Holy Roman Empire.
Who was Emperor first, Archduke Charles or his brother Joseph I?

A common challenge in pathogen discovery by deep sequencing approaches is to recognize viral or subviral pathogens in samples of diseased tissue that share no significant homology with a known pathogen. Here we report a homology-independent approach for discovering viroids, a distinct class of free circular RNA subviral pathogens that encode no protein and are known to infect plants only. Our approach involves analyzing the sequences of the total small RNAs of the infected plants obtained by deep sequencing with a unique computational algorithm, progressive filtering of overlapping small RNAs (PFOR). Viroid infection triggers production of viroid-derived overlapping siRNAs that cover the entire genome with high densities. PFOR retains viroid-specific siRNAs for genome assembly by progressively eliminating nonoverlapping small RNAs and those that overlap but cannot be assembled into a direct repeat RNA, which is synthesized from circular or multimeric repeated-sequence templates during viroid replication. We show that viroids from the two known families are readily identified and their full-length sequences assembled by PFOR from small RNAs sequenced from infected plants. PFOR analysis of a grapevine library further identified a viroid-like circular RNA 375 nt long that shared no significant sequence homology with known molecules and encoded active hammerhead ribozymes in RNAs of both plus and minus polarities, which presumably self-cleave to release monomer from multimeric replicative intermediates. A potential application of the homology-independent approach for viroid discovery in plant and animal species where RNA replication triggers the biogenesis of siRNAs is discussed.
Which are the smallest known subviral pathogens of plants?

The IUCN Redlist 3.1, which uses the Birdlife International checklist, lumps the common and widespread grey-headed parrot with Cape parrots and brown-necked parrots, each of which are more narrowly distributed and more threatened, leading to an assessment of least concern.
What is the status of Cape parrot?