question:
Historically, the population of Tibet consisted of primarily ethnic Tibetans and some other ethnic groups.
What has the population of Tibet primarily consisted of?

answer: yes

question:
The first web browser was invented in 1990 by Sir Tim Berners-Lee.
What was Berners-Lee a director of?

answer: no

question:
Mother and son attended a public parade through London and a grand service of thanksgiving in St Paul's Cathedral on 27 February 1872, and republican feeling subsided.
Who spoke against Victoria at the rally in Trafalgar Square?

answer: no

question:
This means that in case of a conflict with domestic law, international law will always prevail.
The preamble of what states that treaties are a source of international law?

answer:
no