Complex sentence: The Bene Gesserit cannot predict the Fremen or Guild turn 15 default wins, however they may predict that the Fremen or the Guild will win in turn 15 by the normal majority stronghold occupancy criteria.
Split into simpler sentences: The Bene Gesserit cannot predict the Fremen or Guild turn 15 default wins. However they may predict that the Fremen or the Guild will win in turn 15 by the normal majority stronghold occupancy criteria.