premise: I see the rather boring point about using alumni to cover both men and women , and I quite agree that the use of relatively newer and less widely used terms like authoress , aviatrix , and poetess seems to be a deliberate , unwarranted attempt to identify someone as a female ; but a graduate of the feminine gender is a `woman graduate ' = alumna , the `first woman dancer in a ballet company ' is a prima ballerina ( I 've never heard of a prime ballerino ) , and a `woman opera star ' is a diva or prima donna . I hesitate to point out that we use prima donna of men , too , because my critics will say that they disapprove of the term 's second life as designating a temperamental person of either sex .
hypothesis: A prime ballerino is the 'first male dancer in a ballet company ' .