ist ▁rule ▁in ▁Poland , ▁there ▁have ▁been ▁calls ▁for ▁greater ▁political ▁representation ▁for ▁the ▁S iles ian ▁eth nic ▁minor ity . ▁In ▁ 1 9 9 7 , ▁a ▁Kat ow ice ▁court ▁of ▁law ▁registered ▁the ▁Union ▁of ▁People ▁of ▁S iles ian ▁National ity ▁( Z L NS ) ▁as ▁the ▁political ▁representative ▁organization ▁of ▁the ▁S iles ian ▁eth nic ▁minor ity , ▁but ▁after ▁two ▁months , ▁the ▁registration ▁was ▁rev oked ▁by ▁a ▁regional ▁court . ▁ ▁Language ▁ ▁The ▁S lav ic ▁S iles ian ▁language ▁or ▁dialect ▁of ▁Polish ▁( o ften ▁called ▁Upper ▁S iles ian ) ▁is ▁spoken ▁by ▁the ▁S iles ian ▁eth nic ▁group ▁or ▁national ity ▁inside ▁Polish ▁Upper ▁S iles ia . ▁According ▁to ▁the ▁last ▁census ▁in ▁Poland ▁( 2 0 1 1 ), ▁some ▁ 5 0 9 , 0 0 0 ▁people ▁declared ▁S iles ian ▁to ▁be ▁their ▁native ▁language ; ▁however , ▁as ▁many ▁as ▁ 8 1 7 , 0 0 0 ▁people ▁declared ▁themselves ▁to ▁be ▁of ▁S iles ian ▁national ity , ▁not ▁necessarily ▁speaking ▁S iles ian , ▁even ▁though ▁the ▁S iles ian ▁national ity ▁has ▁not ▁been ▁recognized ▁by ▁Polish ▁govern ments ▁since ▁its ▁creation ▁in ▁ 1 9 4 5 . ▁ ▁There ▁is ▁some ▁cont ention ▁over ▁whether ▁S iles ian ▁is ▁a ▁dialect ▁or ▁a ▁language ▁in ▁its ▁own ▁right . ▁Most ▁Polish ▁lingu ists ▁consider ▁S iles ian ▁to ▁be ▁a ▁prominent ▁regional