question:
Chemical reactions are invariably not possible unless the reactants surmount an energy barrier known as the activation energy.
What is not possible unless the reactants surmount an energy barrier known as the activation energy?

answer: yes

question:
This is the first time [that] the Chinese media has lived up to international standards".
What did a Peking professor say about Chinese media coverage?

answer: yes

question:
Rupert Murdoch, head of The Sun's parent company News Corporation, speaking at a 2007 meeting with the House of Lords Select Committee on Communications, which was investigating media ownership and the news, said that he acts as a "traditional proprietor".
Who was the Conservative leader that The Sun often supported?

answer: no

question:
Under Governor Miguel Ahumada, the education system in the state was unified and brought under tighter control by the state government, and the metric system was standardized throughout the state to replace the colonial system of weights and measures.
The first large scale dam project was initiated on which river?

answer:
no