Title: Planck constant.
Question: The value quoted here for the Planck constant is based on a measurement in what year?

Title: Tuvalu.
Question: What is the highest elevation on Tuvalu?

Title: Thuringia.
Question: How much of the Thuringia population is non-religious?

Title: Molotov%E2%80%93Ribbentrop Pact.
Question:
How many Polish people were used in labor camps?