Given the task definition and input, reply with output. In this task, you will use your knowledge about language (and common sense) to determine what element the marked number refers to. The numbers are marked with two underlines around them, like: _ number _. There are several possible answers, you'll need to choose the proper one. Carefully read the given text, pay special attention to the marked number, think about what (unwritten) information the marked number holds inside, choose the most adequate word(s) from the optional answers. If none of them seems right to you, there's also an option for other. If your answer is "REFERENCE", also write the reference entity, otherwise write the implicit option name. Options to choose from are:
REFERENCE: Some object which is being mentioned in the text before or after the target number. The reference answer has a higher priority than any other. If both Reference and another answer are possible, prioritize the Reference.
YEAR: Describing a calendric year
AGE: Describing someone's age
CURRENCY: Reference to some monetary value e.g dollar, euro etc.
PEOPLE: Describing a single/plural persons
TIME: Describing a time of the day. Usually you can add the word o'clock after those numbers.
OTHER: Some other option, which isn't listed here.

Rommie:  The enemy destroyer was eliminated , but Castalian casualties are still high . Five of their ships are down . The planet was bombarded . Estimated civilian casualties : _ five _ million .
Beka Valentine: That 's a lot of sushi .
Dylan Hunt: It 's not funny , Beka .
Beka Valentine: Looked pretty darned funny from here .
Dylan Hunt: Look , if you 're all finished insulting our allies , might I remind you that the point of these training exercises is to improve their morale , not destroy it .
Seamus Harper: Look , Dylan , if you think Aquaman and the Silver Surfer here are going to help you stop the Magog , you may as well start basting yourself with steak sauce now and avoid the rush .
REFERENCE casualties