Does the sentence "The Daoguang Emperor, concerned both over the outflow of silver and the damage that opium smoking was causing to his subjects, ordered Lin Zexu to end the opium trade." provide a valid answer to the question "Where was opium made?"

A: no

Does the sentence "He says the Dow Jones average's fall of more than 50% over a period of 17 months is similar to a 54.7% fall in the Great Depression, followed by a total drop of 89% over the following 16 months." provide a valid answer to the question "What was the percentage the Dow Jones fell in the Great Depression?"

A: yes

Does the sentence "Despite the lack of a categorical counterindication, the belief that alcohol and antibiotics should never be mixed is widespread." provide a valid answer to the question "Should alcohol be used while on antibiotics?"

A: yes

Does the sentence "The Qing dynasty was founded not by Han Chinese, who constitute the majority of the Chinese population, but by a sedentary farming people known as the Jurchen, a Tungusic people who lived around the region now comprising the Chinese provinces of Jilin and Heilongjiang." provide a valid answer to the question "What parts of China did they come from?"

A:
yes