Kill Wilson

Every prospective assassin is given a run through the simulation to determine if they’d fit into the agency.
They are handed a note that says “Go to the Foster Building and kill Wilson. Do not check in until you have killed Wilson.”
There are three people in the Foster Building with the last name Wilson, two with Wilson as a first name.
If the assassin does some basic research, they’ll figure out which is the right Wilson to kill and pass the test.
Those that kill all five fail the test.
And blowing the building up is a huge no-no.