anchor.diff:  "/m/04_pd3","chayote"
   "/m/04_pq5","fiat 125"
   "/m/04_ptv","fiat 600"
  -"/m/04_q2x","fiat doblã²"
  +"/m/04_q2x","fiat doblò"
   "/m/04_q6x","fiat ducato"
   "/m/04_r5c","african elephant"
   "/m/04_sv","motorcycle"
  
positive.code: "/m/06q8h1","lens hood"
  "/m/06q_t_","bun"
  "/m/06qc5","sound"
  "/m/06qf1q","å koda octavia"
  "/m/06qrr","soft drink"
  "/m/06r77g","mandu"
  "/m/06rk9l","linzer torte"
  
negative.code: "/m/018yrv","barrel racing"
  "/m/018ywq","scottish terrier"
  "/m/018z4d","bloodhound"
  "/m/018z5l","mikoyan-gurevich mig-15"
  "/m/018zrn","relay race"
  "/m/01911n","chassis"
  "/m/0191_7","retail-store"
  