question: 
While videoconferencing technology was initially used primarily within internal corporate communication networks, one of the first community service usages of the technology started in 1992 through a unique partnership with PictureTel and IBM Corporations which at the time were promoting a jointly developed desktop based videoconferencing product known as the PCS/1.
What does DIANE in Project DIANE stand for?

answer: no


question: 
Tucson is the second-largest populated city in Arizona behind Phoenix, both of which anchor the Arizona Sun Corridor.
Which university is in Tucson?

answer: no


question: 
The Crown endeavoured to compensate the nobles, who had lost much of their agricultural labour force; this harmed the economy of the city for generations to come.
What proportion of the Valencia area's population were the Moriscos?

answer: no


question: 
Many grand houses and public buildings, such as the National Gallery, are constructed from Portland stone.
Of what material is London's National Gallery made?

answer:
yes