Based on the clue 'creator of andy panda he held the longest contract...', what is the answer?

Based on the clue 'creative works not protected by copyright land th...', what is the answer? Based on the clue 'creator cs forester gave horatio this date year o...', what is the answer? Based on the clue 'creator marc cherry has said that bree van de kamp...', what is the answer? Based on the clue 'creator matt groening has stated that this charact...', what is the answer? Based on the clue 'creator of archy and mehitabel this humorist once ...', what is the answer? Based on the clue 'creator of beetle bailey whose name was defined in...', what is the answer? Based on the clue 'creator of little orphant annie this hoosier poet ...', what is the answer? Based on the clue 'creator of the cisco kid william sidney porter was...', what is the answer?