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

Ex Input:
Contrary to earlier beliefs, viruses are not the smallest causative agents of infectious diseases. Single-stranded RNAs as small as 246 nucleotides exist in certain higher plants and cause more than a dozen crop diseases. These RNAs have been termed viroids. Despite their extremely limited information content, viroids replicate autonomously in susceptible cells--that is, they do not require helper functions from simultaneously replicating conventional viruses. Viroids are covalently closed circular molecules with a characteristic rodlike secondary structure in which short helical regions are interrupted by internal and bulge loops. Viroids are not translated; they are replicated by a host enzyme (or enzymes) (probably RNA polymerase II) via oligomeric RNA intermediates by a rolling circle mechanism. Viroidlike satellite RNAs resemble viroids in size and molecular structure, but are found within the capsids of specific helper viruses on which they depend for their own replication. These RNAs are of great interest to molecular biology for at least two reasons: 1) they are the smallest and simplest replicating molecules known, and 2) they may represent living fossils of precellular evolution in a hypothetical RNA world.

Ex Output:
Which are the smallest known subviral pathogens of plants?


Ex Input:
If you are a high school senior graduating and looking to enter college in 2006, you will take the new exam. The biggest change to the SAT will be the introduction of a new writing section. The writing section will consist of two parts: an essay and a multiple-choice section. Students will be given 25 minutes to respond to a prompt and construct a well-organized essay that effectively deals with the task. The essay question may require students to complete a statement, to react to a quote, or to agree or disagree with a point of view. In any case, a good essay will support the chosen position with specific reasons and examples from literature, history, art, science, current affairs, or even a student's own experiences. Essays will be scored based on the procedures for the current SAT II: Writing Test. Essays will be graded by two independent readers On a scale of 1~6, and their two scores will be combined to form an essay subscore that ranges from 2 to 12. Should the readers' scores vary by more than 2 points, a third reader will score the essay; The readers will be high school teachers and college professors who teach composition. To ensure that essays will be scored in a timely manner, they will be scanned and made available to readers on the Internet for grading purpose. The writing section will also include multiple-choice grammar and usage questions. Some of these questions will call upon students to improve given sentences and paragraphs. Others will present students with sentences and require them to identify mistakes in diction , grammar, sentence construction, subject-verb agreement, proper word usage. The highest possible score on the new writing section will be 800. Scores on the essay and multiple-choice section will be combined to produce a single score. A writing subscore will also be assigned. The highest possible scores on the Critical Reading and Math sections will remain 800 each, making 2,400 a perfect score on the new SAT.

Ex Output:
Which parts are included in the writing section of SAT according to the passage?


Ex Input:
Names in Marble (Estonian: Nimed marmortahvlil) is an Estonian 2002 film directed by Elmo Nuganen.

Ex Output:

The film Names in Marble was directed by whom?