Epistemic Indefinites (henceforth EIs) are indefinites in which this ignorance inference is conventionalized (Jayez and Tovena, 2006; Alonso-Ovalle and MenéndezBenito, 2010). Examples of epistemic indefinite determiners are German irgendein (Haspelmath, 1997; Kratzer and Shimoyama, 2002) and Italian un qualche (Zamparelli, 2007). Sentences (2) and (3) make an existential claim, and additionally...