Table: pidie_jaya_subdistricts
Columns: subdistrict_kecamatan
capital
land_area_km_2
total_area_km_2
percentage
subdistrict_divisions
villages

Question: What is the area of Ulim with less than 30 villages?
SQL: SELECT AVG("land_area_km_2") FROM pidie_jaya_subdistricts WHERE "capital" = 'ulim' AND "villages" < 30