You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "Who passed away first, Manfred von Richthofen or Cedric Popkin ?" whose answer is Manfred von Richthofen.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Manfred von Richthofen date of death Cedric Popkin date of death
Useful Output:

Doc 1: On July 12th he died of his illness while a prisoner of war. Fatigue, wounds and weather. One year to live… Manfred von Richthofen in the
Doc 2: 1. Richthofen was shot by Captain Brown. · 2. He was shot by Gunner Robert Buie. · 3. He was shot by Sergeant Popkin. · 4. Richthofen was shot by
Doc 3: 21 April 1918: The claim of Sergeant Cedric Popkin, 24th Machine Gun Company, Australian Expeditionary Force The Death of the Red Baron
Doc 4: The Red Baron underwent a near death experience when, on one of his brave forays, Richthofen suffered a serious head injury wound on 6 July 1917
Doc 5: 21 April 1918: Rittmeister Manfred Albrecht Freiher von Richthofen, “The Red Baron,” was killed in combat at Morlancourt Ridge, near Vaux-sur-Somme, France.