Question: Are Jack Bender and Roger Christian both film directors ?
Related documents: [0]  [DOC] Jack Bender (born September 25, 1949) is an American television and film director, television producer and former actor best known for his work as a director on "Lost", "The Sopranos" and "Game of Thrones". [END] 
[1]  [DOC] Roger Christian (born 25 February 1944) is an English set decorator, production designer and feature film director. He won an Academy Award for his work on the original "Star Wars" and was Oscar-nominated for his work on "Alien". Christian directed the second unit on both "Return of the Jedi" and "" as well as feature films including "The Sender" and "Nostradamus". He also directed the 2000 film "Battlefield Earth" which is regarded as one of the worst films ever made. [END] 
Answer: 
yes
yes