1918
Police contacted the boy 's mother and were trying to determine where the gun came from , Board of Education spokesman Frank Sobrino said .
 Work for: Frank Sobrino, Board of Education
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: Organization based in, Located in, Live in, Work for, Kill 
Text: {0} 
 Entity Pairs:  Frank Sobrino, Board of Education 
Answer:
 Work for: Frank Sobrino, Board of Education