challenge: Where is the village of Piastowo located?
  
  A. In north-central Poland, within Kuyavian-Pomeranian Voivodeship
  B. In north-eastern Poland, within Podlaskie Voivodeship
  C. In south-central Poland, within Lesser Poland Voivodeship
  D. In western Poland, within Greater Poland Voivodeship
  Answer: 