Question: Gelatine was an airship piloted on September 19, 1905 by a pioneer American aviator and what?
Sentence (from "Zachary Lansdowne"): Lieutenant Commander Zachary Lansdowne, USN (December 1, 1888 – September 3, 1925) was a United States Navy officer and early Naval aviator who contributed to the development of the Navy's first lighter-than-air craft.
Relevant evidence: No