The following are stories and questions about them. Each story is followed by a question and answer to a given question.

Story: Lublin is the ninth largest city in Poland and the second largest city of Lesser Poland. It is the capital and the center of Lublin Voivodeship ("province") with a population of 349,103 (March 2011). Lublin is the largest Polish city east of the Vistula River, and is located approximately to the southeast of Warsaw by road. 

One of the events that greatly contributed to the city's development was the Polish-Lithuanian Union of Krewo in 1385. Lublin thrived as a centre of trade and commerce due to its strategic location on the route between Vilnius and Kraków; the inhabitants also had the privilege of free trade in the Grand Duchy of Lithuania. The Lublin Parliament session of 1569 led to the creation of a real union between the Crown of the Kingdom of Poland and the Grand Duchy of Lithuania, thus creating the Polish-Lithuanian Commonwealth. Lublin also witnessed the early stages of Reformation in the 16th century. A Calvinist congregation was founded and certain groups of radical Arians also appeared in the city, making it an important global centre of Arianism. At the turn of the centuries, Lublin was also recognized for hosting a number of outstanding poets, writers and historians of the epoch.

Question: Which city is the subject of the article?
Answer:Lublin

Question: What country is it in?
Answer:Poland

Question: How big is it, in terms of rankings?
Answer:largest Polish city east of the Vistula River

Question: What city is it near?
Answer:Warsaw

Question: What is it the capital of?
Answer:Lublin Voivodeship

Question: When was that figure collected?
Answer:unknown

Question: On what date, was the population of the city estimated?
Answer:March 2011

Question: What was one event that made a large contribution to its development?
Answer:Polish-Lithuanian Union of Krewo

Question: When did that happen?
Answer:1385

Question: Did the city do well as a trading hub?
Answer:yes

Question: Why?
Answer:its strategic location

Question: What other advantage did its residents enjoy?
Answer:free trade

Question: What parliamentary event happened there?
Answer:Parliament session of 1569

Question: Which countries did that unite?
Answer:Crown of the Kingdom and the Grand Duchy

Question: What entity did that unification create?
Answer:Polish-Lithuanian Commonwealth

Question: What religious event was the region witness to?
Answer:
Reformation