Problem: Please answer a question about the following article about Department store:
Ireland developed a strong middle class, especially in the major cities, by the mid-nineteenth century. They were active patrons of department stores. Delany's New Mart was opened in 1853 in Dublin, Ireland. Unlike others, Delany's had not evolved gradually from a smaller shop on site. Thus it could claim to be the first purpose-built Department Store in the world. The word department store had not been invented at that time and thus it was called the "Monster House". The store was completely destroyed in the 1916 Easter Rising, but reopened in 1922.
What was Delany's originally called? 
A: Monster House
Problem: Please answer a question about the following article about Treaty:
A treaty is null and void if it is in violation of a peremptory norm. These norms, unlike other principles of customary law, are recognized as permitting no violations and so cannot be altered through treaty obligations. These are limited to such universally accepted prohibitions as those against the aggressive use of force, genocide and other crimes against humanity, piracy, hostilities directed at civilian population, racial discrimination and apartheid, slavery and torture, meaning that no state can legally assume an obligation to commit or permit such acts.
What will a treaty be if it is in violation of a peremptory norm?
A: null and void
Problem: Please answer a question about the following article about University of Kansas:
The University of Kansas has had more teams (70) compete in the National Debate Tournament than any other university. Kansas has won the tournament 5 times (1954, 1970, 1976, 1983, and 2009) and had 12 teams make it to the final four. Kansas trails only Northwestern (13), Dartmouth (6), and Harvard (6) for most tournaments won. Kansas also won the 1981–82 Copeland Award.
What school has won the most national debate championships?
A: Northwestern
Problem: Please answer a question about the following article about Computer:
The abacus was initially used for arithmetic tasks. The Roman abacus was used in Babylonia as early as 2400 BC. Since then, many other forms of reckoning boards or tables have been invented. In a medieval European counting house, a checkered cloth would be placed on a table, and markers moved around on it according to certain rules, as an aid to calculating sums of money.
When was the Roman abacus first used?
A:
2400 BC