98
In Lebanon , hundreds of students gathered on the campuses of the Arab University of Beirut and the American University of Beirut calling for the assassination of US President George W . Bush and British Prime Minister Tony Blair .
 Lebanon: place; campuses: place; students: entity
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: demonstrate 
  Option: entity, place 
Text: {0} 
Answer:
 Lebanon: place; campuses: place; students: entity