premise: Sveinn Ólafur Gunnarsson is an award winning Icelandic stage and film actor who starred in and co-wrote 2011's "Either Way", Ragnar Bragason's "Metalhead" and Baltasar Kormákur's "The Deep". Gunnarsson stars in the film Rams which premiered in the Un Certain Regard section at the 2015 Cannes Film Festival. He also stars in the upcoming American film "Autumn Lights".
hypothesis: Sveinn Olafur Gunnarsson appeared in "Either Way" in the Un Certain Regard section at the 2015 Cannes Film Festival.
reason: It is incorrect because the film "Rams", not "Either Way", was premiered in the Un Certain Regard section at the 2015 Cannes Film Festival.