Complex sentence: Koryukivka (,,) is a city in Chernihiv Oblast (province) of Ukraine with a population of 13,707 (2006) and was founded in 1657, over 350 years ago.
Split into simpler sentences: Koryukivka (,,) is a city in Chernihiv Oblast (province) of Ukraine. It was founded in 1657, over 350 years ago.