In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.

who discovered the magnetic effect of electric current
Hans Christian Ørsted

actress who played emily walters in the recent movie hampstead
Diane Keaton

the first civilization in asia formed along the and river valleys around bc

Mesopotamia