Q: Does "The demise of the sick man of Europe left considerable confusion as to what was to be meant by "Near East"." provide a valid answer to "What did the term Near East focus on in the 1890s?"?
A: no

Q: Does "The 1775 treatise "The Natural Varieties of Mankind", by Johann Friedrich Blumenbach proposed five major divisions: the Caucasoid race, Mongoloid race, Ethiopian race (later termed Negroid, and not to be confused with the narrower Ethiopid race), American Indian race, and Malayan race, but he did not propose any hierarchy among the races." provide a valid answer to "What can one not mark between the variety of mankind?"?
A: no

Q: Does "Times of personal significance have included the births and marriages of her children, grandchildren and great grandchildren, her coronation in 1953, and the celebration of milestones such as her Silver, Golden and Diamond Jubilees in 1977, 2002, and 2012, respectively." provide a valid answer to "When was Elizabeth's Diamond Jubilee?"?
A: yes

Q: Does "However, some scholars contest the idea of a Proto-Euphratean language or one substrate language." provide a valid answer to "Who do some scholars think the Sumerian language originally belonged to?"?
A:
no