Text: The Sejm moved to Warsaw in 1569, and the death of the last ruler of the Jagiellonian dynasty, Zygmunt August, led to the creation of a Republic of Nobles and an elective monarchy that would serve it.
Entailment: The Sejm was in Warsaw for part of the 16th century.
Contradiction: Several members of the Jagiellonian dynasty came after Zygmunt August.