Note that on the current version of sisku, however, "do sisku tu'a la nitcion." works for seeking Nick, because "tu'a" raises to any abstraction that's needed, not just an event abstraction. However, "tu'a lo -unicorn" will not work.
Why not? It would be {le ka ce'u du lo pavyseljirna}, just like {le ka ce'u du la nitcion}. The unicorn case reduces to {le ka ce'u pavyseljirna}, but that doesn't mean {tu'a lo pavyseljirna} doesn't work.
(The Nick case should reduce to {le ka ce'u nitcion}
if CMENE were BRIVLA, but anyway...)