Simplify the following text for a Grade 10 native English-speaking person.
Original: It is located approximately 650 km ( 400 mi ) west of Curitiba , Parana 's capital city , on the border with Argentina and Paraguay .
Simplified: It is located approximately 650 km ( 400 mi ) west of Curitiba , Parana 's capital city , being the westernmost city in that state .