Peace negotiations at the Congress of Paris resulted in the signing of the Treaty of Paris on 30 March 1856. In compliance with article III, Russia restored to the Ottoman Empire the city and citadel of Kars in common with "all other parts of the Ottoman territory of which the Russian troop were in possession". Russia ceded some land in Bessarabia at the mouth of the Danube to Moldavia. By article IV The United Kingdom, France, Sardinia and Turkey restored to Russia "the towns and ports of Sevastopol, Balaklava, Kamish, Eupatoria, Kerch, Jenikale, Kinburn, as well as all other territories occupied by the allied troops". In conformity with article XI and XIII, the Tsar and the Sultan agreed not to establish any naval or military arsenal on the Black Sea coast. The Black Sea clauses weakened Russia, and it no longer posed a naval threat to the Ottomans. The principalities of Moldavia and Wallachia were nominally returned to the Ottoman Empire; in practice they became independent. The Great Powers pledged to respect the independence and territorial integrity of the Ottoman Empire.:43233
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who were the principalities of Moldavia and Wallachia later return to?
Ah, so.. the Ottoman Empire

This may be managed directly on an individual basis, or by the assignment of individuals and privileges to groups, or (in the most elaborate models) through the assignment of individuals and groups to roles which are then granted entitlements. Data security prevents unauthorized users from viewing or updating the database. Using passwords, users are allowed access to the entire database or subsets of it called "subschemas". For example, an employee database can contain all the data about an individual employee, but one group of users may be authorized to view only payroll data, while others are allowed access to only work history and medical data. If the DBMS provides a way to interactively enter and update the database, as well as interrogate it, this capability allows for managing personal databases.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is a subset of a database called that can be accessed by using a password?
Ah, so.. subschemas

The Region of Ile de France, including Paris and its surrounding communities, is governed by the Regional Council, which has its headquarters in the 7th arrondissement of Paris. It is composed of 209 members representing the different communes within the region. On December 15, 2015, a list of candidates of the Union of the Right, a coalition of centrist and right-wing parties, led by Valerie Pecresse, narrowly won the regional election, defeating a coalition of Socialists and ecologists. The Socialists had governed the region for seventeen years. In 2016, the new regional council will have 121 members from the Union of the Right, 66 from the Union of the Left and 22 from the extreme right National Front.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): In which district is the Regional Coucil housed?
Ah, so..
7th