"A contradiction is two or more statements on an event or topic that can't all be true."
That's not a 'contradiction', it maybe a logical fallacy however depending on what you mean by 'true', I.E. it can't be raining and not raining in the same place at the same time once we agree on what 'rain' is. See my above post, though I'm curious what events you had in mind when you wrote that?
Just one at a time if you like, don't spam things up with the usual discredited internet lists.
