Complex sentence: In 2015 Stirnemann showed ATC at the "Joli Mois de Mai" in Biel/Bienne, Switzerland, and in the same year he organized a ATC show at the Max-Frisch-Kunstbad in Zurich.
Split into simpler sentences: In 2015 Stirnemann showed ATC at the "Joli Mois de Mai" in Biel/Bienne, Switzerland. In the same year he organized an ATC show at the Max-Frisch-Kunstbad in Zurich.