How did you make "What's your stereotype?"

Hi there,

Thanks for an awesome API!

I was curious as to whether you had any additional information on how the lab project "What's your stereotype?" (http://labs.echonest.com/stereotypes/) was created, and how I might go about re-producing something similar using the EchoNest API.

For example, how does one say "You are a typical tweeny bopper, drama filled, teenager. You’re that girl.." based on the artists alone, is there a tremendous amount of human input involved in this process or might some of this be generated automatically from data?