According to the gimste,
fasnu = x1 (event) is an event that happens/occurs/takes place; x1 is an incident/happening/occurrence.
However, ((la tsani|I) believe that fasnu should have a second place, in order to better comply with my ideas about abstractors. fasnu's x2 would be the predication of which the event (fasnu1) is an instance. Adding this second place to fasnu turns lo nu broda into sugar for lo fasnu be lo du'u broda.