Q: Does "In rankings produced by Times Higher Education based upon the REF results Imperial was ranked 2nd overall for GPA and 8th for "research power" (compared to 6th and 7th respectively in the equivalent rankings for the RAE 2008)." provide a valid answer to "What does REF stand for?"?
A: no

Q: Does "After the public school system was widely developed beginning in the 19th century, some parents found reasons to be discontented with the new system." provide a valid answer to "When were public schools become more and more developed?"?
A: yes

Q: Does "Portugal is a significant European minerals producer and is ranked among Europe's leading copper producers." provide a valid answer to "What mineral is Portugal ranked as a leading European producer of?"?
A: yes

Q: Does "But the retina also contains specialized ganglion cells that are directly photosensitive, and project directly to the SCN, where they help in the entrainment (synchronization) of this master circadian clock." provide a valid answer to "What provides information to the SCN?"?
A:
no