High Quality Content by WIKIPEDIA articles! Ulasek [u las k] is a village in the administrative district of Gmina W sewo, within Ostrów Mazowiecka County, Masovian Voivodeship, in east-central Poland. It lies approximately 4 kilometres (2 mi) south of W sewo, 18 km (11 mi) west of Ostrów Mazowiecka, and 83 km (52 mi) north-east of Warsaw. Gmina W sewo is a rural gmina (administrative district) in Ostrów Mazowiecka County, Masovian Voivodeship, in east-central Poland. Its seat is the village of W sewo, which lies approximately 17 kilometres (10 mi) north-west of Ostrów Mazowiecka and 85 km (52 mi) north-east of Warsaw. The gmina covers an area of 119.2 square kilometres (46.0 sq mi), and as of 2006 its total population is 4,582.