The problem: Answer a question about this article:
If a party has materially violated or breached its treaty obligations, the other parties may invoke this breach as grounds for temporarily suspending their obligations to that party under the treaty. A material breach may also be invoked as grounds for permanently terminating the treaty itself.
What may be invoked as grounds for permanently terminating a treaty?
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The answer: A material breach

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Some scholars note that Tibetan leaders during the Ming frequently engaged in civil war and conducted their own foreign diplomacy with neighboring states such as Nepal. Some scholars underscore the commercial aspect of the Ming-Tibetan relationship, noting the Ming dynasty's shortage of horses for warfare and thus the importance of the horse trade with Tibet. Others argue that the significant religious nature of the relationship of the Ming court with Tibetan lamas is underrepresented in modern scholarship. In hopes of reviving the unique relationship of the earlier Mongol leader Kublai Khan (r. 12601294) and his spiritual superior Drogon Chogyal Phagpa (12351280) of the Sakya school of Tibetan Buddhism, the Yongle Emperor (r. 14021424) made a concerted effort to build a secular and religious alliance with Deshin Shekpa (13841415), the Karmapa of the Karma Kagyu school. However, the Yongle Emperor's attempts were unsuccessful.
The Tibetan leaders had a diplomacy with what neighboring state?
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The answer: Nepal

The problem: Answer a question about this article:
Bacteria exhibit an extremely wide variety of metabolic types. The distribution of metabolic traits within a group of bacteria has traditionally been used to define their taxonomy, but these traits often do not correspond with modern genetic classifications. Bacterial metabolism is classified into nutritional groups on the basis of three major criteria: the kind of energy used for growth, the source of carbon, and the electron donors used for growth. An additional criterion of respiratory microorganisms are the electron acceptors used for aerobic or anaerobic respiration.
What are three main criterias of bacterial metabolism?
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The answer: the kind of energy used for growth, the source of carbon, and the electron donors

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Speculation that the Ashkenazi arose from Khazar stock surfaced in the later 19th century and has met with mixed fortunes in the scholarly literature. In late 2012 Eran Elhaik, a research associate studying genetics at the Johns Hopkins University School of Public Health, argued for Khazar descent in his paper The Missing Link of Jewish European Ancestry: Contrasting the Rhineland and the Khazarian Hypotheses. A 2013 study of Ashkenazi mitochondrial DNA found no significant evidence of Khazar contribution to the Ashkenazi Jewish DNA, as would be predicted by the Khazar hypothesis.
What did a 2013 study of Ashkenazi mitochondrial DNA find in regards to the Khazar descent idea?
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The answer:
no significant evidence of Khazar contribution to the Ashkenazi Jewish DNA