Given the task definition and input, reply with output. In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Passage: The 367th Fighter Group was first activated at Hamilton Field, California on 15 July 1943 with the 392d, 393d and 394th Fighter Squadrons as its initial components. Several members of its initial cadre were former Flying Tigers with prior combat experience. It was not until late August, however, that the group received its first Bell P-39 Airacobra. After building up its strength, the group moved in October to Santa Rosa Army Air Field, California. In December the group moved to Oakland Municipal Airport, while its squadrons moved to separate fields in northern California. The squadrons moved temporarily in sequence to Tonopah Army Air Field, Nevada, where they performed dive bombing and gunnery training. Training accidents with the Airacobra cost eight pilots their lives. In January 1944, as it prepared for overseas movement, the 367th was beefed up with personnel from the 328th and 368th Fighter Groups. The group staged through Camp Shanks, and sailed for England aboard the . The "Drunken Duchess" docked at Greenock, Scotland on 3 April and the group was transported by train to its airfield at RAF Stoney Cross, England.
 Link Information: In February 1937, Lieutenant Benjamin S. Kelsey, Project Officer for Fighters at the United States Army Air Corps (USAAC), and Captain Gordon P. Saville, fighter tactics instructor at the Air Corps Tactical Schoo Question: Who was the lead designer/creator of the Bell P-39 Airacobra?

Answer: Benjamin S. Kelsey