Real World article(written from a Production point of view)
Kea Four was the fourth planet in its star system. There was an archaeological excavation on this planet.
In 2368, Captain Jean-Luc Picard was a speaker at an archaeological symposium. He wrote a paper about the Kea Four excavation, which he read to an audience at the symposium. (TNG: "The Chase")
A section of dialogue was cut from the episode in which Jean-Luc Picard and Richard Galen were talking about the symposium.