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The Offices of Aperture (Conference Room A)

That's it the big meeting if finally over and you can take and nice leisurely stroll back to your desk...But something feels wrong. Just then a portal panel falls from nowhere, as people start to panic you rush into the nearest room to take cover. You pass out from the fear and when you awake to your horror you see a test. It seems as though you must solve it in order to return to your station and you'd better do it quickly!.