Google used to have a page that presented a few text entries and a search button. It would attempt to find relations between the entries.

For example, if I were to enter "Earth", "Mars", and "Jupiter" it would return such results as [The rest of the solar system listed], "Solar System", "Space", etc.

I can't recall the name and I didn't see a product that sounded similar in this list: http://www.google.com/options/

Any ideas?