Title: Iran.
Question: What region consisting of Dagestan, Georgia, Armenia, & Azerbaijan did Iran lose control of to the Russians?

Title: Nanjing.
Question: What type of climate does Nanjing enjoy?

Title: Catalan language.
Question: How many genders does Catalan have?

Title: Jehovah%27s Witnesses.
Question:
Who is the final Judge of whether Jehovah Witnesses get to survive Armageddon?