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: A trespasser carrying a suspicious package jumped over the White House railings last night - the latest in a string of embarrassing security breaches to hit the US capital. The intruder was arrested after climbing into the grounds of the President's home at 10.25pm. Brian Leary of the United States Secret Service - the federal agency in charge of protecting the President - said the unnamed person was in custody in Washington DC and charges were pending. He added that the intruder, whose gender or age has not been released, had been 'immediately' apprehended by officers in the uniformed division of the Secret Service.Trespasser managed to get into grounds of presidential residenceSecret Service in Washington DC claim they made an 'immediate' arrestIntruder's parcel was examined but deemed not to be a riskBreach comes a few days after a gyrocopter landed on Capitol's lawn 
 Question:Last September, a knife-wielding man managed to scale the fence on the north side and get into _ itself via an unlocked door.

White House