Given the task definition and input, reply with output. In this task, you will be shown a passage. You need to write a fill-in-the-gap question based on your understanding of the events that might be inferred from the passage. Your question should be answerable based on the passage and only have one correct answer. Show the gap in your question with a _ .

Conrad Clitheroe, left, and Gary Cooper, right, were thrown in jail after being arrested for writing down aircraft registration numbers in Dubai Three British planespotters who have spent two months in prison in the United Arab Emirates after they were arrested on national security grounds have been released. Conrad Clitheroe, 54 and Gary Cooper, 45, from Stockport, along with their ex-pat friend Neil Munro were stopped by police for writing down aircraft registration numbers at Fujairah Airport. They were taken to a police station and, despite being told they would not be detained, were put into prison. Clitheroe's wife Valerie had written to British Prime Minister David Cameron to ask him to intervene in the case, raising concerns about her husband's health due to his heart murmur and high blood pressure.Conrad Clitheroe was jailed with his friends Gary Cooper and Neil MunroTrio arrested after writing down plane registration numbers at UAE airportFears for Mr Clitheroe's health after he ran out of blood pressure medicineHe will now be able to celebrate first wedding anniversary with wife in May

Mr _ has always insisted they never took any photographs.