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Similar scams have posed as being from telecoms providers claiming to need to speak to the head teacher about “ internet systems ” or the Department of Work and Pensions .
 ( phishing: have posed as being,  telecoms providers: trusted entity, head teacher: victim, Department of Work and Pensions: trusted entity) 
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: phishing, data breach, ransom, discover vulnerability, patch vulnerability, Arguments type: vulnerable system, capabilities, vulnerability, number of victim, issues addressed, compromised data, damage amount, common vulnerabilities and exposures, victim, patch number, number of data, tool, discoverer, time, purpose, place, payment method, releaser, vulnerable system version, attacker, supported platform, patch, price, vulnerable system owner, trusted entity, attack pattern. 
Text: {0} 
Answer:
 ( phishing: have posed as being,  telecoms providers: trusted entity, head teacher: victim, Department of Work and Pensions: trusted entity) 