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\*.

when did they change pennies from copper to zinc
1943

when did the first diary of a wimpy kid come out
2004

who first described the idea of natural rights

ancient Greek philosophy