Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Bogota, Colombia (CNN) -- Two hostages freed by a Colombian rebel group reunited with their family members in the country's capital Friday. Speaking to reporters, one of the freed hostages called for renewed dialogue between the government and insurgents. "Humanitarian exchange is the first step toward a friendly understanding, which permits the return of our brothers deprived of their liberty," politician Armando Acuna said shortly after he was released by the FARC leftist guerrilla group Friday. Marine Henry Lopez Martinez was also released Friday and met family members at an airport in the country's capital. "This is the most beautiful moment of the liberations, the loving reuniting of the families. For this, all the effort is worth it," former Sen. Piedad Cordoba, who helped coordinate the humanitarian mission to free them, said in a Twitter post.The hostages released Friday are a politician and a marineThey are part of a group of five hostages rebels pledged to release as a humanitarian gestureColombia's president accuses the FARC of a "double standard" after two workers are kidnappedTwo more hostages are scheduled to be released Sunday 
 Question:The FARC, or Revolutionary Armed Forces of Columbia, have been at war with the _ government since the 1960s.

Colombian