Title: 2008 Sichuan earthquake.
Question: What was given in exchange of signing the document?

Title: Light-emitting diode.
Question: What did Nakamura, Akasaki, and Amano receive for their work?

Title: Pain.
Question: Why has defining pain been a challenge?

Title: Comics.
Question:
What style of comics did Japan have a long history with prior to World War II?