TASK DEFINITION: In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.
PROBLEM: Who arranged the periodic table by increasing atomic number?

SOLUTION: Henry Moseley

PROBLEM: Who did the soviet union signed a nonaggression pact with in 1939?

SOLUTION: Nazi Germany

PROBLEM: Who's playing han solo in the new solo movie?

SOLUTION:
Alden Ehrenreich