Title: Zinc.
Question: What is the most common supplement in the US?

Title: Political corruption.
Question: Bribery is an example of corruption that involves what type of gain?

Title: Arsenal F.C..
Question: In what competition was Arsenal the first to enter the finals?

Title: Molotov%E2%80%93Ribbentrop Pact.
Question:
What countries agreed to a tripartisan agreement?