Original sentence: Apart from this, firefighters from companies in the neighboring cities of Osorno, La Unión and Paillaco had to come to assist.Due to the spreading of toxic smoke Carabineros had to evacuate a total of 10,000 persons from Isla Teja and classes at the nearby German School Instituto Alemán Carlos Anwandter had to be canceled for the day.On Monday the 3rd December 2007 the building Emilio Pugín of the Faculty of Sciences got on fire.To soffocate the fire firefighters from Valdivia had to use special equipments since the chemicals fueling the fire did put out with water
Edited sentence: Due to the spreading of toxic smoke the  police had to evacuate a total of 10,000 people from Isla Teja.Firefighting companies from the neighboring cities of Osorno, La Unión and Paillaco had to come to assist to control and extinguish the fire.On Monday the 3rd December 2007 the  Emilio Pugín building of the Faculty of Sciences got on fire