User blog comment:Dave55811/"Coordinate" bets, anyone?/@comment-62.151.234.163-20130930172909/@comment-76.22.47.170-20140530215203

I'm guessing that if the japanese version translates more to "location" than any other interpretation of "Coordinate", that they're looking for Eren's basement, which contains Grisha's detailed research and recordings of the memories of other Titan "Shifters".