Title: Arnold Schwarzenegger.
Question: Who did Schwarzenegger beat to win his sixth Mr. Olympia in a row?

Title: Napoleon.
Question: In what year did Napoleon attempt to resume peace talks?

Title: Light-emitting diode.
Question: What substance did Barbieri use in his work with high-brightness LED?

Title: 2008 Summer Olympics torch relay.
Question:
When were these 30 sworn in?