Currently FrameNet does not contain a frame that would be appropriate for the expression "heißt die Losung" of this sentence. So it has been assigned an "Unknown" frame. Still the one core frame element present has been marked as Fe1.
The "Unknown" frame is being evoked by the words "heißt die Losung". As there is no single node of the syntactic structure that covers exactly these words, the edge for the frame-evoking element is split.