Complex sentence: Ho was reported to be captured by a group of French soldiers led by Jean-Étienne Valluy at Việt Bắc in Operation Lea which turned out to be a Viet Minh advisor, who was later killed trying to escape.
Split into simpler sentences: Ho was reported to be captured by a group of French soldiers led by Jean-Étienne Valluy at Việt Bắc in Operation Lea. The person in question turned out to be a Viet Minh advisor, who was later killed trying to escape.