Problem: Estonia co-operates with Latvia and Lithuania in several trilateral Baltic defence co-operation initiatives, including Baltic Battalion (BALTBAT), Baltic Naval Squadron (BALTRON), Baltic Air Surveillance Network (BALTNET) and joint military educational institutions such as the Baltic Defence College in Tartu. Future co-operation will include sharing of national infrastructures for training purposes and specialisation of training areas (BALTTRAIN) and collective formation of battalion-sized contingents for use in the NATO rapid-response force. In January 2011 the Baltic states were invited to join NORDEFCO, the defence framework of the Nordic countries.
When were the Baltic states asked to join NORDEFCO?
The answer is the following: January 2011

Problem: Whether there are measurable changes in the sea level relative to the islands of Tuvalu is a contentious issue. There were problems associated with the pre-1993 sea level records from Funafuti which resulted in improvements in the recording technology to provide more reliable data for analysis. The degree of uncertainty as to estimates of sea level change relative to the islands of Tuvalu was reflected in the conclusions made in 2002 from the available data. The 2011 report of the Pacific Climate Change Science Program published by the Australian Government, concludes: "The sea-level rise near Tuvalu measured by satellite altimeters since 1993 is about 5 mm (0.2 in) per year."
Prior to what year were the reports used to assess sea level rise?
The answer is the following: pre-1993

Problem: In the next centuries, Armenia was in the Persian Empire's sphere of influence during the reign of Tiridates I, the founder of the Arsacid dynasty of Armenia, which itself was a branch of the eponymous Arsacid dynasty of Parthia. Throughout its history, the kingdom of Armenia enjoyed both periods of independence and periods of autonomy subject to contemporary empires. Its strategic location between two continents has subjected it to invasions by many peoples, including the Assyrians (under Ashurbanipal, at around 669–627 BC, the boundaries of the Assyrian Empire reached as far as Armenia & the Caucasus Mountains), Medes, Achaemenid Persians, Greeks, Parthians, Romans, Sassanid Persians, Byzantines, Arabs, Seljuks, Mongols, Ottomans, successive Iranian Safavids, Afsharids, and Qajars, and the Russians.
Who ruled the Assyrians between 669-627 BC?
The answer is the following: Ashurbanipal

Problem: Philadelphia's an annualized unemployment rate was 7.8% in 2014, down from 10.0%the previous year. This is higher than the national average of 6.2%. Similarly, the rate of new jobs added to the city's economy lagged behind the national job growth. In 2014, about 8,800 jobs were added to the city's economy. Sectors with the largest number of jobs added were in education and health services, leisure and hospitality, and professional and business services. Declines were seen in the city's manufacturing and government sectors.
What industries accounted for most of the city's job gains?
The answer is the following:
education and health services, leisure and hospitality, and professional and business services