Does "LEDs have been developed by Seoul Semiconductor that can operate on AC power without the need for a DC converter." contain the correct answer to "What is so good about ac powered HP-LEDs?"
OPTIONS:
- yes
- no

A: no

Does "The 1850s and 1860s saw the commencement of Parliament House, the Treasury Building, the Old Melbourne Gaol, Victoria Barracks, the State Library, University, General Post Office, Customs House, the Melbourne Town Hall, St Patrick's cathedral, though many remained uncompleted for decades, with some still not finished." contain the correct answer to "During what two decades were the Parliament House, Treasury Building, Victoria Barracks, State Library, and General Post Office commenced?"
OPTIONS:
- yes
- no

A: yes

Does "By the 19th century, Eastern Armenia had been conquered by the Russian Empire, while most of the western parts of the traditional Armenian homeland remained under Ottoman rule." contain the correct answer to "Who took over Eastern Armenia in the 19th century?"
OPTIONS:
- yes
- no

A:
yes