Assertion: dolphin | /r/CapableOf | become in the middle ages
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Source sentences:
text: In the Middle Ages, the dolphin became an important heraldic element in the coats of arms of several European noble families, the most noticeable being those of the Dauphin de Viennois (later Dauphin of France) through which it passed to the Counts of Forez, Albon and other French families, as well as several branches of the Bourbon family (Count of Montpensier, Count of Beaujolais, among others) the Pandolfini of Florence, and the Delfini of Venice and Rome also used the dolphin as their "canting" armories.