Complex sentence: In 1930, inspired by Breizh Atao's message Célestin Lainé a reserve artillery officer gathered a small group of companions to found Gwenn ha du, a terrorist organization advocating the creation of an independent Breton state through direct action.
Split into simpler sentences: In 1930, inspired by Breizh Atao's message Célestin Lainé a reserve artillery officer gathered a small group of companions to found Gwenn ha du. A terrorist organization advocating the creation of an independent Breton state through direct action.