1028
The Cleveland Cavaliers also formally introduced Paul Silas as their coach Monday .
 Cleveland Cavaliers: entity; Paul Silas: person
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: start position 
  Option: person, entity, place 
Text: {0} 
Answer:
 Cleveland Cavaliers: entity; Paul Silas: person