Title: Friedrich Hayek.
Question: What did Hayek believe was the core responsibility of the state?

Title: Catalan language.
Question: When was an opinion poll done concerning Valencian?

Title: Cardinal (Catholicism).
Question: Pope Paul VI raised the cap on cardinal electors from 70 to what?

Title: Iran.
Question:
Who was the last Archaemenid Emperor at the time of its defeat by Alexander the Great?