    Sentence 1: He »soid firefighters  had an: advantage on- the ‘northern  flank becouse’ of. on>. existing  firebreak dug during Lost year ‘s  |fire north of Mount Lemmon .    Sentence 2: Fire spokesman Gordon  Gay .. said firefighters: .had~ an  ladvantage. “on. the -northern - flank  ibecause of burned areas from last  year. 's Bullock fire -