Before GE bought NBC, just outside each bank of elevators at 30 Rockefeller Center was a direction sign listing each employee who worked on that floor.
GE's purchase of NBC was a bad idea.  
mnli hypothesis: GE's purchase of NBC was a bad idea.   premise: Before GE bought NBC, just outside each bank of elevators at 30 Rockefeller Center was a direction sign listing each employee who worked on that floor.