Premise: Ron Cobb ( born 1937 ) is an American cartoonist , artist , writer , film designer , and film director . For the next two years he delivered classified documents around San Francisco , then , after signing up for an extra year to avoid assignment to the infantry , was sent to Vietnam in 1963 as a draughtsman for the Signal Corps .
Hypothesis: Ron Cobb is only a designer.
Label: CONTRADICTION