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: Washington (CNN) Even as tensions between the US and North Korea have intensified, along with President Donald Trump's rhetoric, US diplomats have quietly and steadily been in contact with their North Korean counterparts. The meetings, led by the US Special Representative for North Korea Policy Joseph Yun and reported on by CNN, have focused on Americans detained in North Korea, but have also touched on the relationship between the two countries. The US has been in contact with North Korea since at least February at an official level and there have been lower-level talks between Americans -- though none who represent the US government -- and North Korean officials.Contacts between Pyongyang and the US picked up again after Trump took officeThey follow a deep freeze between North Korea and the Obama administration 
 Question:Three other _ are still being held in North Korea.

Americans