Q: Does "Between 12 and 16,5 million ethnic Germans and German citizens were expelled westwards to allied-occupied Germany." provide a valid answer to "After what war were Germans expelled from their territories?"?
A: no

Q: Does "Portugal's national energy transmission company, Redes Energeticas Nacionais (REN), uses sophisticated modeling to predict weather, especially wind patterns, and computer programs to calculate energy from the various renewable-energy plants." provide a valid answer to "What does REN do?"?
A: yes

Q: Does "Another principal tool in the diagnosis of infectious disease is microscopy." provide a valid answer to "What is microscopy used for?"?
A: yes

Q: Does "In-mid 2015, China started the build-up of the third generation BeiDou system (BDS-3) in the global coverage constellation." provide a valid answer to "When did China begin constructing the third BeiDou system?"?
A:
yes