Q: Does "The BeiDou-2 system began offering services for the Asia-Pacific region in December 2012." provide a valid answer to "At the time when BeiDou-2 system began offering services, what was the positioning data the system was able to provide?"?
A: no

Q: Does "(2006), a significant proportion of the maternal lineages of Somalis consists of the M1 haplogroup." provide a valid answer to "When did Richards publish his mtDNA research?"?
A: yes

Q: Does "The W.G. Harris residence in Richmond was designed by famed early modern architect and member of the Harvard Five, Landis Gores." provide a valid answer to "Who designed the General Assembly Offices at the Eighth and Main Building?"?
A: no

Q: Does "The equation may be expressed as ratios, or, by taking the logarithm (base 2) of both sides, by addition, using the APEX system, in which every increment of 1 is a doubling of exposure; this increment is commonly known as a "stop"." provide a valid answer to "What is used to discover the right exposure parameters?"?
A:
no