1101
Up to 20 , 000 protesters thronged the plazas and streets of San Francisco , where more than 1 , 600 people were arrested in the past two days in a civil disobedience campaign .
 arrest jail: arrested
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: declare bankruptcy, transfer ownership, marry, die, phone write, arrest jail, convict, sue, transfer money, end organization, start organization, end position, merge organization, start position, transport, charge indict, elect, attack, injure, born, extradite, release parole, sentence, demonstrate, meet, trial hearing, divorce, nominate, fine, appeal, pardon, execute, acquit 
Text: {0} 
Answer:
 arrest jail: arrested