Detailed Instructions: In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Problem:Passage: Karel Bossart was born on February 9, 1904 in Antwerp, Belgium. He graduated in Mining Engineering at the Université libre de Bruxelles in 1924. After winning a scholarship—under the Belgian American Education Foundation—to M.I.T. to study aeronautical engineering he remained in the US working for various aircraft companies. In 1945 he was chief of structures at Convair and proposed to the United States Air Force that a missile could be developed with a range of 8000 km. The Air Force was skeptical of Bossart's proposal, partly wishing to preserve the priority of Strategic Bombers, but granted him a limited contract to develop a prototype. Bossart's major innovation was the use of a monocoque design in which structural support was maintained by pressure within the inelastic fuel tanks. After a series of tests in 1947 the Air Force lost interest and Bossart was instructed to abandon the research, but by 1951 the escalation of the Cold War enabled Bossart to revive the project that became known as 'Atlas'. In 1955 the CIA reported that Soviet Russia had made swift progress on its own ICBM programme and Atlas became a crash project of the highest national importance. Bossart used this opportunity to advance work with high energy cryogenic fuels that resulted in the Centaur upper stage.
 Link Information: The earliest mention of Antwerp dates from the 4th century.

In the 4th century Question: How old is the city where Bossart was born?
Solution:
Answer: 17