The line is an example of a direct quotation. That is when a quotation by someone is unchanged and presented in its entirety. Of course, it's a part of a larger speech, but it's unchanged and can be as such analyzed for various things that the linguists would be searching for.
Theseus calls for his master of ceremonies to inform him what entertainments are available for them as a part of wedding feast activities. Philostrate, the master of ceremonies, first offers a story about a battle between Centaurs. This is to be performed by an Athenian eunuch, accompanying himself on the harp.
Theseus says that he has already told this story to his bride-to-be, when he was giving her details about one of his relatives
We are currently reading this in class as well.
Forgive me if I'm wrong, but I believe that the answer is, "They see Dr. Mengele deciding who will live and who will die."
