Question: Which party is this this Canadian politician serving as leader who gave speeches on foreign policy at Skirball Center for the Performing Arts?
Sentence (from "Skirball Center for the Performing Arts"): Recently, the Skirball Center hosted speeches on foreign policy, question and answer sessions by John Kerry, Al Gore, Justin Trudeau and Mohammad Javad Zarif among others, as well as the recording of the third-season finale of "The Apprentice" and each season finale of "Celebrity Apprentice".
Relevant evidence: Yes