anchor.diff:  geography,label,geo_level
   05,"Arkansas",S
  -05000001,"01 Central WIB",W
  -05000002,"02 Eastern WIB",W
  -05000003,"03 Little Rock WIB",W
  -05000004,"04 North Central WIB",W
  -05000005,"05 Northeast WIB",W
  -05000006,"06 Northwest WIB",W
  -05000007,"07 Southeast WIB",W
  -05000008,"08 Southwest WIB",W
  -05000009,"09 West Central WIB",W
  -05000010,"10 Western WIB",W
   05001,"Arkansas, AR",C
   05003,"Ashley, AR",C
   05005,"Baxter, AR",C
  
positive.code: 0542620,"Searcy, AR",M
  0545500,"Texarkana, TX-AR (AR part)",M
  0599999,"Nonmetropolitan, nonmicropolitan",M
  
negative.code: 05111,"Poinsett, AR",C
  05113,"Polk, AR",C
  05115,"Pope, AR",C
  05117,"Prairie, AR",C
  05119,"Pulaski, AR",C
  05121,"Randolph, AR",C
  