improve the demo
English.
[Overview] Brussels.
[Overview] Mitterrand.
[Overview] Forgot figure.
[Overview] Kreis Bergstraße.
Correct mistake.
[Overview] Ebola.
[Overview] Germany first president.
bla
bli
Fix triple for Belgium.
Merge branch 'demo_update' of github.com:ProjetPP/Papers into demo_update
Merge pull request #46 from ProjetPP/demo_update

improve the demo