Detailed Instructions: In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.
Problem:Passage: Quentovic was a Frankish emporium in the Early Middle Ages that was located on the European continent close to the English Channel. The town no longer exists, but it was thought to have been situated near the mouth of the Canche River in what is today the French commune of Étaples. Archaeological discoveries led by David Hill in the 1980s found that the actual location of Quentovic was east of Étaples, in what is now the commune of La Calotterie. It was an important trading place for the Franks and its port linked the continent to England, specifically to the southeastern county of Kent. From what we know today, Quentovic was founded by a Neustrian king in the early 6th century. It was one of the two most prominent Frankish ports in the north (the other being Dorestad) until it was abandoned, probably in the 11th century. Merchants were drawn to this place because the number of trading posts at the time was limited. Quentovic was also the place where Anglo-Saxon monks would cross the English Channel on their pilgrimage to Rome. A lack of physical evidence, and the sudden disappearance of this emporium, make the town difficult to interpret. Some of the most important historical evidence on Quentovic comes from documents of taxation and especially through the town's minting of coinage. Coins minted during both the Merovingian and the Carolingian dynasties have been found.
 Link Information: On gold coins struck in his royal workshop Answer: gold
Solution:
What material were coins used by the Merovingian dynasty made from?