In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Passage: Charlemagne planned to continue the Frankish tradition of dividing his kingdom between all his heirs, but was unable to do so as only one son, Louis the Pious (r. 814–840), was still alive by 813. Just before Charlemagne died in 814, he crowned Louis as his successor. Louis's reign of 26 years was marked by numerous divisions of the empire among his sons and, after 829, civil wars between various alliances of father and sons over the control of various parts of the empire. Eventually, Louis recognised his eldest son Lothair I (d. 855) as emperor and gave him Italy. Louis divided the rest of the empire between Lothair and Charles the Bald (d. 877), his youngest son. Lothair took East Francia, comprising both banks of the Rhine and eastwards, leaving Charles West Francia with the empire to the west of the Rhineland and the Alps. Louis the German (d. 876), the middle child, who had been rebellious to the last, was allowed to keep Bavaria under the suzerainty of his elder brother. The division was disputed. Pepin II of Aquitaine (d. after 864), the emperor's grandson, rebelled in a contest for Aquitaine, while Louis the German tried to annex all of East Francia. Louis the Pious died in 840, with the empire still in chaos.A three-year civil war followed his death. By the Treaty of Verdun (843), a kingdom between the Rhine and Rhone rivers was created for Lothair to go with his lands in Italy, and his imperial title was recognised. Louis the German was in control of Bavaria and the eastern lands in modern-day Germany. Charles the Bald received the western Frankish lands, comprising most of modern-day France. Charlemagne's grandsons and great-grandsons divided their kingdoms between their descendants, eventually causing all internal cohesion to be lost. In 987 the Carolingian dynasty was replaced in the western lands, with the crowning of Hugh Capet (r. 987–996) as king. In the eastern lands the dynasty had died out earlier, in 911, with the death of Louis the Child, and the selection of the unrelated Conrad I (r. 911–918) as king.The breakup of the Carolingian Empire was accompanied by invasions, migrations, and raids by external foes. The Atlantic and northern shores were harassed by the Vikings, who also raided the British Isles and settled there as well as in Iceland. In 911, the Viking chieftain Rollo (d. c. 931) received permission from the Frankish King Charles the Simple (r. 898–922) to settle in what became Normandy. The eastern parts of the Frankish kingdoms, especially Germany and Italy, were under continual Magyar assault until the invader's defeat at the Battle of Lechfeld in 955. The breakup of the Abbasid dynasty meant that the Islamic world fragmented into smaller political states, some of which began expanding into Italy and Sicily, as well as over the Pyrenees into the southern parts of the Frankish kingdoms.
What is the name of the person whose entire family except one son was deceased by 813?

Passage: Two days after the events of the first film, a traumatized and blood-covered Sarah escapes the cave with no memory of the events. She is taken to a hospital, where it is found that some of the blood on her belongs to Juno Kaplan. Sheriff Vaines takes his deputy Elen Rios, Sarah, and three spelunking specialists – Dan, Greg, and Cath – to the cave to find the missing women. The team members are sent down via an old mine shaft operated by the old, mysterious Ed Oswald.
The group discovers Rebecca's mutilated body, causing Sarah to have flashbacks of the crawlers and causing Vaines to believe Sarah may be responsible for the girls' disappearance.  While crawling through a tunnel, she attacks Vaines and the others, causing the others to split up. Vaines runs to search for Sarah, and in the process is surprised by a crawler, and fires his gun in a panic, causing a minor collapse in the cavern which traps Cath, separating her from Rios, Dan, and Greg.  The three decide to find an alternate way around in order to try to free Cath and arrive in a room full of bones, where they find Holly's video camera. They watch it and realize the women were attacked by the crawlers. The three are then themselves attacked by crawlers and separated.
Rios starts calling for help, alerting the crawlers to her location, but is rescued by Sarah.  The two then watch as a crawler kills Dan and drags his body away, prompting Sarah to inform Rios that the crawlers are blind and hunt via sound. After escaping from and killing a crawler, Cath finds Greg before the two escape from another crawler and find Sam's body. They decide to try to use her to swing across a chasm, but are attacked again. Greg sacrifices himself to buy time for Cath, but she ultimately does not survive.
Who attacks someone, causing the group to split up?

Passage: Most information on the social life in Vijayanagara empire comes from the writings of foreign visitors and evidence that research teams in the Vijayanagara area have uncovered. The Hindu caste system was prevalent and rigidly followed, with each caste represented by a local body of elders who represented the community. These elders set the rules and regulations that were implemented with the help of royal decrees. Untouchability was part of the caste system and these communities were represented by leaders (Kaivadadavaru). The Muslim communities were represented by their own group in coastal Karnataka. The caste system did not, however, prevent distinguished persons from all castes from being promoted to high-ranking cadre in the army and administration. In civil life, by virtue of the caste system, Brahmins enjoyed a high level of respect. With the exception of a few who took to military careers, most Brahmins concentrated on religious and literary matters. Their separation from material wealth and power made them ideal arbiters in local judicial matters, and their presence in every town and village was a calculated investment made by the nobility and aristocracy to maintain order. However, the popularity of low-caste scholars (such as Molla and Kanakadasa) and their works (including those of Vemana and Sarvajna) is an indication of the degree of social fluidity in the society.
Well-to-do men wore the Petha or Kulavi, a tall turban made of silk and decorated with gold. As in most Indian societies, jewellery was used by men and women and records describe the use of anklets, bracelets, finger-rings, necklaces and ear rings of various types. During celebrations, men and women adorned themselves with flower garlands and used perfumes made of rose water, civet musk, musk or sandalwood. In stark contrast to the commoners whose lives were modest, the lives of the empire's kings and queens were full of ceremonial pomp in the court. Queens and princesses had numerous attendants who were lavishly dressed and adorned with fine jewellery, their daily duties being light.Physical exercises were popular with men and wrestling was an important male preoccupation for sport and entertainment. Even women wrestlers are mentioned in records. Gymnasiums have been discovered inside royal quarters and records speak of regular physical training for commanders and their armies during peacetime. Royal palaces and market places had special arenas where royalty and common people alike amused themselves by watching matches such as cock fights, ram fights and wrestling between women. Excavations within the Vijayanagara city limits have revealed the existence of various types of community-based activities in the form of engravings on boulders, rock platforms and temple floors, implying these were places of casual social interaction. Some of these games are in use today and others are yet to be identified.

What was Kanakadasa's scholarly work?