Instructions: 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: Passengers hoping to cross the channel using the shuttle are facing hours of delays following a suspension of services due to 'migrant activity' at the French side. The situation appears to have improved since this morning, with Eurotunnel now reporting delays of 30 minutes before check-in, followed by a one hour wait before departure. Services were suspended for a brief time shortly before midnight due to 'migrant activity', adding that French authorities are dealing with the situation. Continued strike action from French ferry workers has added to the chaos on Kent's coastbound roads. Ferry strikes have led to a risk of delays at Dover port and St Pancras International station in London.Le Shuttle is warning of serious delays crossing from Folkestone to CalaisServices were suspended shortly before midnight due to 'migrant activity'Continued strike action from French ferry workers is adding to the chaos5,000 migrants are camping at Calais, and eight have died in eight weeks 
 Question:The principal migrant camp in _ has ballooned to the size of a small town, as up to 150 people arrive each day to take up residence.
Output:
Calais