The biggest green area in LOCATION@1 is small forest LOCATION@2 -LRB- LOCATION@3 -RRB- , which was named after the Piast dynasty as part of MISC@1 propaganda upon its annexation to LOCATION@4 according to the ORGANIZATION@1 .

The biggest green area in LOCATION@1 is small forest LOCATION@2 -LRB- LOCATION@3 -RRB- , named after Piast dynasty as part of MISC@1 propaganda .
