Does the sentence "During the reign of Nader Shah, Iran reached its greatest extent since the Sassanid Empire, reestablishing the Iranian hegemony all over the Caucasus, as well as other major parts of the west and central Asia, and briefly possessing what was arguably the most powerful empire at the time." provide a valid answer to the question "Nader Shah took back what territories that were annexed by the Ottomans and the Russians?"

A: no

Does the sentence "French policy was, moreover, complicated by the existence of the le Secret du roia system of private diplomacy conducted by King Louis XV." provide a valid answer to the question "What was the objective of le Secret du roi?"

A: no

Does the sentence "Previous influxes among ethnic groups have been African-Americans in the postwar era, and Irish, Italian and (to a lesser degree)" provide a valid answer to the question "In modern times has the population of White/Caucasian increase or decrease since the 70s?"

A: no

Does the sentence "A patent is a form of right granted by the government to an inventor, giving the owner the right to exclude others from making, using, selling, offering to sell, and importing an invention for a limited period of time, in exchange for the public disclosure of the invention." provide a valid answer to the question "An invention is a solution to what type of problem?"

A:
no