Answer the following question: Question: What nationality was the passport Rockoff and Jon forged for Pran? If there is no answer, please output "Insufficient information to provide an answer.". Movie title: The Killing Fields Context: In the Cambodian capital, Phnom Penh, during May 1973, the Cambodian national army is fighting a civil war with the Khmer Rouge, a result of the Vietnam War overspilling that country's borders. Dith Pran, a Cambodian journalist and interpreter for The New York Times, awaits the arrival of reporter Sydney Schanberg at the city's airport but leaves suddenly. Schanberg takes a cab to his hotel where he meets up with Al Rockoff (John Malkovich). Pran meets Schanberg later and tells him that an incident has occurred in a town, Neak Leung; allegedly, an American B-52 has bombed the town. Schanberg and Pran go to Neak Leung where they find that the town has been bombed. Schanberg and Pran are arrested when they try to photograph the execution of two Khmer Rouge operatives. They are eventually released and Schanberg is furious when the international press corps arrives with the U.S. Army. Two years later, in 1975, the Phnom Penh embassies are being evacuated in anticipation of the arrival of the Khmer Rouge. Schanberg secures evacuation for Pran, his wife and their four children. However, Pran insists that he would stay behind to help Schanberg. The Khmer Rouge move into the capital, ostensibly in peace. During a parade through the city, Schanberg meets Rockoff. They are later met by a detachment of the Khmer Rouge, who immediately arrest them. The group is taken through the city to a back alley where prisoners are being held and executed. Pran, unharmed because he is a Cambodian civilian, negotiates to spare the lives of his friends. They do not leave Phnom Penh, but instead retreat to the French embassy. Informed that the Khmer Rouge have ordered all Cambodian citizens in the embassy to be handed over and fearing the embassy will be overrun, the embassies comply. Knowing that Pran will be imprisoned or killed, Rockoff and fellow photographer Jon Swain (Julian Sands) of The Sunday Times try to forge a British passport for Pran; the deception fails when the image of Pran on the passport photo fades to nothing, as...
Answer:
British.