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In a village near the West Bank city of Nablus on Tuesday , Israeli troops opened fire on youths throwing stones , hitting a 9 - year - old Palestinian boy in the head and critically wounding him , and hitting two 12 - year - old boys in the legs , lightly wounding them , Palestinian hospital officials said .
 ( attack: fire,  troops: attacker, village: place, youths: target) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: declare bankruptcy, transfer ownership, transfer money, marry, transport, die, phone write, arrest jail, convict, sentence, sue, end organization, start organization, end position, start position, meet, elect, attack, injure, born, fine, release parole, charge indict, extradite, trial hearing, demonstrate, divorce, nominate, appeal, pardon, execute, acquit, merge organization, Arguments type: beneficiary, prosecutor, plaintiff, seller, victim, buyer, agent, destination, artifact, organization, recipient, person, place, origin, target, giver, adjudicator, attacker, vehicle, defendant, entity, instrument. 
Text: {0} 
Answer:
 ( attack: fire,  troops: attacker, village: place, youths: target) 